A high tuned circuit in a tuned amplifier permits it to have high
The best circuit used to eliminate power frequency hum is
Which of the following op-amp system is non linear
A class C amplifier is biased to operate for
Improper biasing of transistor results in
Positive feedback leads to
Negative feedback is
An ideal op-amp has
An operational amplifier is
In transistor amplifier CE mode is preferred because it provides
A transistor can be used as an amplifier in its
Reverse saturation current in a transistor
Most stable transistor circuit is
In linear region operation of transistor
In a Half wave rectifier the best filter is
Practically efficiency is maximum for
Bridge rectifier is normally avoided
A rectifier output is a
Clamping circuit depend mostly on
A positive half wave rectifier is a
When a parallel circuit resonates it is said to:
A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
The function of bleeder resistor in a power supply is
When a full band of frequencies is allowed to pass through a filter circuit to the output, the resonant circuit is called a:
When only the low frequencies are allowed to pass to the output, the filter is known as:
The voltage measured across the two series reactive components at resonant frequency is?
If the bandwidth of a filter increases:
Current in a series RLC circuit may always be used as:
When considering the reactance of a series RLC circuit:
A differential amplifier, amplifies
The type of power amplifier which exhibits crossover distortion in its output is
In a parallel RLC circuit, which value may always be used as a vector reference?
The lowest output impedance is obtained in case of BJT amplifiers for
A voltage amplifier amplifies signal voltage. Similarly, a power amplifier
In a series RLC circuit, which value may always be used as a vector reference?
The upper cutoff frequency of an RC coupled amplifier mainly depends upon
An oscillator of the LC type that has a split capacitor in the circuit is
In a bistable multivibrator circuit, commutating capacitor is used
Removing bypass capacitor across the emitter-leg resistor in a CE amplifier causes
When XC = XL the circuit:
Nibble describes a bits combination of:
A byte constitute of:
One Kilo byte represents:
Basic building block for a digital circuit is:
The base of binary number is:
Physical structure of a computer is called:
Number written with just 0 and 1 is called as:
What does GUI stands for?
ALU stands for?
A logic gate in which all inputs must be low to get a high output is called
Which of the following is permanent memory?
Data in the form of continues flow is Known as:
Identify the odd one?
Which of the following is not a storage device?
Which of the following is a unipolar device?
Find the odd one?
The gain of source follower is
Which are the main parts of central processing unit?
Which among following is responsible for specifying address of a memory location?
What does SDRAM stands for?
EEPROM stands for?
OMR stands for?
Servers are computers that provide resources to other computers connected to a:
Microprocessor is used in which generation of computers?
If CPU executes multiple programs simultaneously, it will be known as:
NTFS stands for
Which of the following is responsible for communication between Memory and ALU?
Which of the following store more data
1 Mega Byte is equal to
Personal computers can be connected together to form a
Find the odd one?
Choose the smallest memory size
What is full form of SMPS?
What is used to make IC chips?
Random Access Memory is which storage of device?
Second generation of computers consist of which of following?
Commonly used unit for measuring the speed of data transmission?
Which operations are performed by RAM?
USB is which type of storage device?
The technology used in computer disks:
Which of the following are components of CPU?
Which among following first generation of computers had?
The difference between the half power frequencies is known as:
In an electric circuit, the dual of resistance is
In the case of BJT amplifier, bias stability is achieved by
A resistor and capacitor in series is known as:
Which one has the highest noise margin?
Which of the following is desirable parameter?
Connecting the negative and positive leads of a battery will produce:
The bandwidth of an RF amplifier is dependent on
If two resistors are placed in series, the final resistance:
If a small value of capacitance is connected in parallel with a large value, the combined capacitance will be nearest to:
Unused input in TTL gate acts as:
What does LED stand for?
Negative feedback in an amplifier:
A 50k resistor in parallel with 50k produces:
If we connect two 3V batteries in series, the output voltage will be:
If we connect two 3V batteries in parallel, the output voltage will be
Which of the following transistors can be used in E-mode?
The two input terminals of an op-amp are known as:
When a step input is given to an op-amp integrator, the output will be
The current requirement of a LED is:
223 on a capacitor represents:
The tolerance bands: gold; silver; brown, represent:
The tolerance bands: gold; silver; red, represent:
JFET in its equivalent circuit can be represented as a
Expand CRO:
A DC voltage :
For the XOR gate, what is the output when only one of the inputs is HIGH:
For the XOR gate, what is the output when both inputs are LOW:
Class AB operation is often used in power amplifiers in order to
The gain of a transistor amplifier falls at high frequencies due to the
For the XOR gate, what is the output when both inputs are HIGH:
If a 10k resistor is placed across a 100v supply, the current will be:
Differential amplifiers are used in
Which of the following amplifier is used in a digital to analog converter?
A capacitor and coil in parallel is called:
To obtain a higher value of resistance, resistors are connected in:
Input impedance of FET is
Name the three leads of a common transistor
The sensitivity of a closed loop system to gain changes and load disturbances depend upon
In a feed back system the transient response
In a stable control system saturation can cause which of the following ?
Error constants of system are measure of
The type 0 system has
A closed loop system is different from open loop system by which of the following
A control system in which the control action is depend on the output is known as
In negative feedback closed loop control system,the overall gain of the system will
In negative feedback controller, which of the following factor does not decrease ?
In Regenerative feedback , the feedback has
Which of the following is true regarding the band width of a feedback amplifier?
The transient response of a system is mainly due to
The transfer function is applicable to which of the following ?
From which of the following transfer function can be obtained?
The position and velocity errors of a type-2 system are
Velocity error constant of a system is measured when the input to the system is unit.
Which of the following is the best method for determining the stability and transient response?
Phase margin of a system is used to specify
Addition of zeros in transfer function causes
In order to increase the damping of a badly underdamped system which of following compensators may be used ?
A phase lag lead network introduces in the output
If the gain of the critical damped system is increased it will behave as
Which of the following can be measured using LVDT?
Which of the following device converts temperature into voltage?
The first order control system has a
The demagnetizing component of armature reaction in a DC generator
DC generator generally preferred for charging automobile batteries is
DC generator field coils are usually made of which type of material
Equilizer rings are required if the armature is
Iron losses in a DC machine are independent of variations in
The number of brushes in lap winding is always
The EMF generated in a DC generator is directly proportional to
In D.C. generators the pole shoes are fastened to the pole core by
Magnetic field in a DC generator is produced by
In DC machine winding, number of commutator segments is equal to
Flemings right-hand rule regarding direction of induced EMF, correlates
In DC generators, lap winding is suitable for
The purpose of providing dummy coils in a generator is
In case of DC machines, mechanical losses are primary function of
In over compounded generator, full load terminal voltage is
The number of brushes in a commutator depends on which of the following
In a four-pole DC machine
In a DC generator the critical resistance refers to the resistance of
In DC generators, current to the external circuit from armature is given through
In DC generators on no-load, the air gap flux distribution in space is
Which of the following motors has the highest no load speed?
The ratio of starting torque to full load torque is least for
The resultant speed, When two D.C. series motors are connected in parallel is
Differentially compound D.C. motors used in applications which requires
Maximum efficiency for a D.C. generator is when,
The use of starter in a DC motor is to:
Which of the following motor is used when high starting torque and wide speed range control is required:
Which of the following D.C. motor will be preferred for machine tools?
Which of the following law can he used to determine the direction of rotation of a motor ?
Which of the following is correct regarding DC shunt motor?
How can we change the direction of rotation of a D.C. series motor?
A three point starter is suitable for
A DC motor is preferred over an AC motor for :
If the field of a D.C. shunt motor gets opened while motor is running
Torque developed by a D.C. motor depends upon
Which of the following D.C. motors is preferred for elevators?
DC motor speed can be varied by varying
DC motors are widely used in
In DC shunt motors as load is reduced
Suppose we are connecting DC motor across ac supply. The motor
K-map is used to:
Which of the following IC package can be plugged into socket?
Base 2 refers to which number system?
Base 10 refers to which number system?
Exclusive or is an:
Each square in K-map represent:
For which of the following flip-flop the output clearly defined for all combinations of two inputs?
Base 16 refers to which number system?
SR Flip flop can be converted to T type flip flop if?
Which of the following has the highest fan out?
The number of bits used to represent a BCD digit is:
Once a PAL has been programmed:
Which of the following has the smallest propagation delay?
Most widely used bipolar family is:
PLAs, CPLDs, and FPGAs are all which type of device?
Which one of the following is correct about the speed power product of an IC:
One application of a digital multiplexer is to facilitate:
The output of an OR gate is LOW when
Which one is the better choice when considering the power dissipation?
The generic array logic (GAL) device is
The figure of merit of a logic family is:
Which type of decoder will select one of sixteen outputs, depending on the 4-bit binary input value?
Which of the following can be used as a parallel to serial converter?
A ripple counter speed is limited by the propagation delay of:
To operate correctly, starting a ring counter requires:
A simple flip-flop is
What type of register would shift a complete binary number in one bit at a time and shift all the stored bits out one bit at a time?
The output of an AND gate is LOW when
Which of the following is true regarding ring and Johnsons counter:
For the OR gate, what is the output when both inputs are HIGH:
Mod-6 and mod-12 counters are most commonly used in:
For the NAND gate, what is the output when both inputs are HIGH:
Which of the following bipolar technology has smallest propagation delay?
The schmitt trigger may be used to?
Which of the following is known as universal gate?
Popular application flip-flop is?
Which of the following is minimum error code?
A flash ADC is a:
Dual slope ADC
Minimum number of MOS required to make a dynamic RAM is
If residual magnetism is present in a DC generator, the induced EMF at zero speed will be
A no-load test is performed on a transformer to determine?
The S.I. unit of power is
The materials which have a large number of free electrons and offer a low resistance are called
An instrument which is used to detect electric current is:
For which of the following have ampere second as the unit?
Out of the following, Ohms law is not applicable to
Resistance is reciprocal of
Which of the following material is used for making the filament of an electric bulb:
With rise in temperature the resistance of semi-conductors
Select the correct statement:
Out of the following which is an insulating material?
The insulation on a current carrying conductor is provided
Which of the following material has nearly zero temperature co-efficient of resistance?
Which of the following quantities remain the same in all parts of a series circuit?
Which one of the following is the best conductor of electricity?
The property of a conductor due to which it passes current is called?
Varistors are
Out of the following the material having a negative temperature co-efficient of resistance is?
Which of the following quantities remain the same in all parts of a parallel circuit?
The resistance of a conductor varies inversely with
An electric filament bulb can be worked from:
Two resistors are said to be connected in series when
Which of the following statement is true both for a series and a parallel D.C. circuit?
With rise in temperature the resistance of pure metals:
A closed path made by several branches of the network is known as
Which of the following is the passive element?
Which of the following is a bilateral element?
A field line and an equipotential surface are
Application of Nortons theorem to a circuit gives
A transformer transforms
The efficiency of a transformer will be maximum when
Another name of Electric pressure
Two lamps 100 W and 60 W are connected in series across 230 V (alternating). Which of the following statement is correct?
Nichrome wire is an alloy of
For testing appliances, the wattage of test lamp should be
Voltage dependent resistors are used
According to Kirchhoffs voltage law, the algebraic sum of all IR drops and EMFs in any closed loop of a network is always
Electric current passing through the circuit produces
The number of electrons in the outer most orbit of carbon atom is
Bulbs in street lighting are all connected in
Kirchhoffs voltage law is related to
Superposition theorem can be applied only to circuits having
If the efficiency of a machine is to be high, which of the following should be low?
Which of the following theorem is related with the selection of load for maximum power transfer?
Ohms law is not applicable to
A capacitor is generally a
An ideal voltage source should have
Sparking occurs when a load is switched off because the circuit has high
Which of the following materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators.
Kirchhoff s current law states that
Which method can be used for absolute measurement of resistances?
For high efficiency of transfer of power, internal resistance of the source should be
Kirchhoff s law is applicable to
The most effective component to be used in reducing the magnitude of the current flowing through an AC or DC circuit.
When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will
For making a capacitor, it is better to select a dielectric having
The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be a:
The capacitance of a capacitor is not affected by
The circuit whose properties are same in either direction is:
Which of the following wires has the greatest cross-sectional area?
If the circuit has resistors, capacitors and semi-conductor diodes, the circuit is
Which of the following circuit configurations has the same voltage drop across each of its components?
What happens to the current-carrying ability of a wire as the temperature rises
Three resistors of values 60, 40 and 35 connected across a 50-V source, what is the approximate amount of heat produced?
Two 30 Ω resistors connected in parallel and connected across a 30-V source, what is the total current flowing in the circuit?
Which of the following factor determines total power in a series circuit?
If the resistance decreases current through the resistor?
Efficiency when maximum power is transferred to the load
What is the applied voltage on a circuit in which 1A is flowing and 10 W is generated?
In an AC circuit capacitive reactance 50Ω, the inductive reactance 30Ω and the resistance 100Ω connected in series. Determine the type of the circuit?
An ideal voltage source is one which has
What type of measurement will the multimeter indicate?
Superposition theorem can be applied only to circuits having
What happens to current flow in a capacitive circuit when the DC voltage across the capacitor is equal to the source voltage?
If the distance between the plates of a capacitor decreases, what happens to the capacitance of the device?
According to Kirchhoffs voltage law, the algebraic sum of all IR drops and e.m.fs. in any closed loop of a network is always
Which of the following properties has the unit of Henry?
In which manner a fuse can be installed in a circuit?
In a parallel circuit operating with a source of 30 VAC, designed to carry a total current of 6 A, what happens to the fuse when the resistance suddenly changes to 2Ω?
A 1K load resistor, RL, is connected across a constant current source of 1.1 The internal source resistance, RS, is 10 k. The load current, RL, is
A 100 V voltage source has a source resistance, RS, of 50 . The equivalent current source is
In any linear bilateral network, if a source of EMF in any branch produces a current I in any other branch, then same EMF acting in the second branch would produce the same current in the first branch. The above statement is associated with which of the theorems
The Superposition theorem is based on
In a parallel circuit operating with a source of 30 VAC, designed to carry a total current of 6 A, what happens to the fuse when the resistance suddenly changes to 2Ω?
The current of electric circuit is analogous to which quantity of a magnetic circuit
The reciprocal of reluctance :
The ability of a material to conduct magnetic flux through it.
Permeability is the inverse equivalent of which electrical term?
The scientist who discovered that a current-carrying conductor would move when placed in a magnetic field?
The emf induced in a coil due to the changing current of another neighboring coil is called
The total number of magnetic lines of force in a magnetic field is called
Lenz law is the consequence of the law of conservation of
The magnetic potential in a magnetic circuit can be measured in terms of
When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
Whenever a conductor cuts magnetic flux, an emf is induced in it. This is known as
The property of a material which opposes the creation of magnetic flux in it
The direction of the induced emf and hence current always opposes the cause producing it. This is known as:
The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
The net electrical charge in an isolated system remains constant. This is known as
Whenever a flux inking a coil or current changes, an emf is induced in it. This is known as
The emf induced in a coil due to the change of its own flux linked with it is called
The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages. This is known as
A rectangular waveguide act as:
In a waveguide the operating wavelength is less than cut-off wavelength, the wave will be:
For a cylindrical waveguide, dominant mode is:
The dominant mode for TM waves in a waveguide is:
When polarization of receiving antenna is unknown, to ensure that it receives at least half power, the transmitted wave should be:
When electromagnetic waves are propagated in a waveguide
Assuming perfect conductor of transmission line, pure TEM propagation is not possible in
Which of the following is known as the brain of a computer?
Modem is used for?
The acronym for MAC is?
What is the full form of IP?
Which of the following is an output device?
RAM stands for?
Data in RAM are:
BIOS stand for?
RAM in its commercial forms is available as:
Which of the following requires refreshing during retaining the data?
Refresh rate of a monitor is measured in:
Which of the following is used between CPU and RAM to speed up the processing power of a CPU?
Which of the following is lowest in memory hierarchy?
CRT stands for?
Which of the following is a GUI device?
LCD stands for?
The types of printers, in which the printing head contacts with the paper in printing process, are called as:
Which of the following is a type of optical media?
A wireless technology built in electronic gadgets used for exchanging data over short distances is?
DVD stands for?
In computer AC to DC conversion is done by?
Which one of the follwoing is an output device?
Which of the following is an input device?"
Which device among following is used for sending digital data over a phone line?
Which of the following is an input device
Memory in a PC is addressed by:"
An electronic path that sends signals from one part of computer to another is?
In which type of computer, data are presented as discrete signals?
Internal memory in a CPU is nothing but:
Which among following is secondary storage device?
Which part of the computer controls the machine cycle?
Which of following is used in Randrom Access Memory?
The portion of the CPU that coordinates the activities of all the other computer components is the:
Modulation is the process of
Demodulation is the process of
Technology used to provide internet by transmitting data over wires of telephone network is?
The memory used in network routers for switching purpose:
Which of the following is responsible for all types of calculations in a computer?
CPU Stands for?
Which language was used as first generation language?
Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured?
The type of instruments which measure the total quantity of electricity delivered in a particular time.
Which of the following are integrating instruments?
The error in an instrument is taken as the percentage of
The instuments used for measuring resistance
An indicating instrument possesses which of the following?
When AC voltage is connected to a PMMC meter, then
Which of the following device prevents the oscillation of the moving system and enables to reach its final position quickly
By using a low resistance shunt ,a moving-coil permanent-magnet instrument can be used as
The energy meter used for measuring energy of a DC circuit is
The speed of energy meter can be controlled by
Inductance can be measured by
The range of instruments can be extended using?
Which of the following meters are not suitable for DC circuits
Which of the following instrument has the best accuracy?
In most of the instruments, damping is provided by
For measuring a very high resistance we should use
The best device to measure the true open circuit EMF of a battery
In order to achieve high accuracy, the slide wire of a potentiometer should be
The suitable bridge for measurements on high voltage capacitors
For measurement of mutual inductance we can use
To avoid the effect of stray magnetic field in A.C. bridges uses
The internal resistance of an ammeter should be
The function of shunt in an ammeter is to
A dynamometer wattmeter can be used for
Which of the following is not the Networking Devices?
What is the use of Ping command?
Which layers of the OSI model are host-to-host layers?
How many bits are there in the Ethernet address?
Repeater operates in which layer of the OSI model?
What is the size of MAC Address?
What is the benefit of the Networking?
Bridge works in which layer of the OSI model?
Which of the following layer of OSI model also called end-to-end layer?
Router operates in which layer of OSI Reference Model?
The layer of OSI model which consists the basic networking hardware transmission technologies of a network
The layer of OSI model responsible for the delivery and formatting of information to the application layer for further processing or display
The layer of OSI model responsible for packet forwarding including routing through intermediate routers
Which of the following is not a layer of OSI model?
The layer of OSI model that transfers data between adjacent network nodes in a wide area network (WAN) or between nodes on the same local area network (LAN) segment
A computer networking device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device.
A device that forwards data packets along networks
A device used to connect two separate Ethernet networks into one extended Ethernet
Which of the following is a Networking Device?
What is the address size of IPv6?
Which of the following IP address class is Multicast
What does broadcasting in networking means?
Which of following provides reliable communication?
What is the use of Bridge in Network?
What is a Firewall in Computer Network?
How many layers are in the OSI model?
What is the natural mask for a class C Network?
Which of the following protocol is defined in Transport layer?
How many layers are in the TCP/IP model?
What is the size of Source and Destination IP address in IP header?
ATM can be used for?
In asymmetric key cryptography, the private key is kept by
IP address version 4 is in which format?
Which type of switching is used in Internet?
Personal computers can be connected together to form a
What are the four things needed to connect to the Internet?
Bluetooth technology is the implementation of a protocol defined by the standard:
Multiplexing is used in:
Which of the following is private IP address?
What is the full form of IP?
Which one of the following extends a private network across public networks?
Network congestion occurs:
The communication channel used in one direction is called:
The topology in which all the computers attach to a central point:
Bluetooth is an example of
In computer network nodes are:
Which one of the following computer network is built on the top of another network?
The communication channel used in both directions using separate lines is:
LAN means?
The communication channel used in both directions at a time is:
Which of the following factors does not change in a transformer?
Spacers are provided between adjacent coils
In a given transformer for given applied voltage, losses which remain constant irrespective of load changes are
No-load current of a transformer has
Primary winding of a transformer
Open circuit test on transformers is conducted to determine:
Which of the following windings in a transformer has more number of turns?
Short circuit test on transformers is conducted to determine:
In a transformer the energy is transferred from primary to secondary
The transformer ratings are usually expressed in terms of
Power transformers are designed to have maximum efficiency at
In the transformer which of the following winding has got more cross-sectional area
Losses which occur in rotating electric machines and do not occur in transformers are?
The noise resulting from vibrations of laminations set by magnetic forces, is termed as
The purpose of lamination of transformer core is:
The chemical used in breather is
Two transformers operating in parallel will share the load depending upon their
An ideal transformer will have maximum efficiency at a load such that
A transformer cannot raise or lower the voltage of a DC supply because
The transformer laminations are insulated from each other by
The path of a magnetic flux in a transformer should have
Which of the following is the most likely source of harmonics in a transformer ?
The no load current in a transformer lags behind the applied voltage by an angle of about
While conducting short-circuit test on a transformer which of the following side is short circuited?
The use of higher flux density in the transformer design
The efficiency of two identical transformers under load conditions can be determined by:
Sumpners test is conducted on trans-formers to determine which of the following factors?
In a transformer the tappings are generally provided on
Silicon steel used in laminations mainly reduces
A common method of cooling a power transformer is
The current amplification factor adc is given by ?
A power amplifier has a gain of 20dB and an input level of 2volts. Assuming that the input and impedance are the same, what is the voltage level at amplifier output?
BJT in CE mode Amplifier can be treated as
If power factor of a circuit is unity its reactive power is
Power factor of a series RLC Circuit at its half power points is
varactor diode is used for
The Effective Channel Length of MOSFET in saturation decreases with increase in
Ebers-Moll model of BJT is valid
Reactive current through capacitive load produces
Wien bridge uses
When a network has 10 nodes and 17 branches then number of different node pair voltages would be
The type of feedback used in Schmitt trigger is
Transformer is ...... in full wave rectifier
A multivibrator can be used as
Rectifier: Oscillator::
The voltage regulation is .... . in an excellent power supply
the output resistance of common base transistor circuit is of the order of
A forward resistance of diode will be
Best electronic device for fast switching application s
The Power Factor of an AC circuit is givan by
An ungrounded antenna near the ground
Which of the following consists of non-resonant antennas?
Which of the following is very useful as a multiband HF receiving antenna?
Which of the following antennas is best excited from a waveguide?
Which of the following reasons is not true for using a counterpoise with antenna?
One of the following is not a reason for the use of an antenna coupler:
Which one of the following reasons for the use of a ground screen with antennas is not correct:
Which one of the following terms does not apply to the Yagi-Uda array?
The standard reference antenna for the directive gain is the
Top loading is sometimes used with an antenna in order to increase its
Cassegrain feed is used with a parabolic reflector to
Zoning is used with a dielectric antenna in order to
A helical antenna is used for satellite tracking because of its
The discone antenna is
One of the following is not an omnidirectional antenna:
Impedance of a half wave folded dipole antenna is
Troposcatter antenna generally used is:
In radio receivers tube EM84 is used as
The highest modulation frequency typically used in FM broadcast is:
serious capacitor is used in transmission line to
In arc welding, temp. of arc is
Unit of luminous flux
Velocity of wind is measured by
The weight of a body at the centre of the Earth is ____
A geostationary satellite ____
Which of the following is a derived unit?
x-ray invented by
transformer is operate
transformer working principles
the nucleus of an atom contains
an electric bulb has a filament made of
an electric appliances is earthed to
which of the following is a semi conductor
we get energy directly from
which of the following device convert electric energy to mechanical energy
sound can not travel through
sound travel at maximum speed in
the loudness of sound wave is determined by its
guiding curve of a right circular cylinder is
Which of the following method used for making magnets
a transformer provides a path for magnetic flux of
A properly biased JFET will act as
Very small time intervals are accurately measured by the
the audio frequency range lies between
In a transistor leakage current mainly depends on
Wave guides are generally made of
The function of AM detector circuit is
Base 10 refers to which number system
a bistable multivibrator is a
negative feedback in amplifier
The number of bits used to store a BCD digit is
MCB stands for
which of the following is an output device
electric flux unit is?
HTTP is
kirchoffs law is applicable for
what is unit of emf
what is resistance
Which among the following is not type of the conductor?
If we increase the value of resistance in electrical ckt the value of current
Number of machine cycles required for RET instruction to execute
Effect of passing current through conductor is
ohms law is valid for
transformation ratio of pulse transformer
As frequency increases, the magnetic flux inside a conductor
Which of the following is a dimensionless quantity.
Mass and weight ………………..
Sound cannot travel through
The loop gain of Schmitt Trigger is always
A semi conductor when placed at 0K
unit distance codes are also called as
when the input to seven segment decoder is"0100" the number on display will be
The unit used to measure the supersonic speed is
A string of 4 bits is called as
The most stable sine wave oscillator with most simple circuit is
which one of the following is not a unit of time
UJT may better used as
Positive feedback is used in
The power consumed by a pure capacitor is
The Odd Parity is generated by
Leakage current in the sillicon semiconductor is in the order of
Which type of semiconductor is Donor
Echo is heard due to
The number of 4:1 MUX required to make 64:1 MUX is
When an instruction is read from the memory it is called
For a stable system the roots of the characteristic equation must lie on
the difference between a hole and a electron is that hole
The magnetic Flux in a transformer follows a path of
In a constant k band pass filter, the series elements
transformer transform?
Ohms law is not applicable to
Which of the following theorem is related with the selection of load for maximum power transfer?
If the efficiency of a machine is to be high, which of the following should be low?
Superposition theorem can be applied only to circuits having
Kirchhoffs voltage law is related to
Bulbs in street lighting are all connected in
Two lamps 100 W and 60 W are connected in series across 230 V (alternating). Which of the following statement is correct?
Another name of Electric pressure
The efficiency of a transformer will be maximum when
A transformer transforms
A capacitor is generally a
An ideal voltage source should have
For testing appliances, the wattage of test lamp should be
Voltage dependent resistors are used
According to Kirchhoffs voltage law, the algebraic sum of all IR drops and EMFs in any closed loop of a network is always
Electric current passing through the circuit produces
Application of Nortons theorem to a circuit gives
Which of the following quantities remain the same in all parts of a parallel circuit?
The resistance of a conductor varies inversely with
An electric filament bulb can be worked from:
Two resistors are said to be connected in series when
Which of the following statement is true both for a series and a parallel D.C. circuit?
With rise in temperature the resistance of pure metals:
serial adder is a
ohms law is true
what is ac in electrical current term ?
Ideal current source has
Ideal voltage source has
if two voltages are connected in parallel then the value is
At any linear network,any two terminals a,b can be reduced to current source Isc with parallel impedance Zth.This theorm is
Maximum undistorted power output of a transmitter is obtained when its modulation is:
The AGC voltage in a radio receiver is proportional to
In an AM wave with 100% modulation, the carrier is suppressed. The percentage of power saving will be
The function of AM detector circuit is
In FM, the noise can be further decreased by
In PPM, message resides in
Which of the following pulse systems is preferred for communication in presence of noise?
Which of the following pulse systems requires higher bandwidth
The audio frequency range lies between
An FM transmitter has maximum frequency deviation of 75 KHz and reproduces audio signal up to 15 KHz. Minimum channel width required, in KHz is
With 100% modulation, ratio of side band power to total power transmitted in an amplitude modulated wave is
To increase the Q factor of an induction, it wound with
Companding is used
In PCM system the SNR of the output signal increases
Armstrong modulator generates
The process of compressing the digital codes at the transmitter and then expanding them back to their original form at receiver is known as
Digital transmission efficiency is given by
The speed of BRI ISDN interface is
Which of the following is not a microwave generation source?
A signal of maximum frequency of 1 KHz is sampled at Nyquist Rate. The interval between two successive samples is:
In order to get back the original signal, it is necessary to use:
Which of the following parts of the sunlight makes the solar cooker hot?
The following circuit can not demodulate SSB:
Class C amplifiers are used as
For a wave propagation in a medium, identity the property that is independent of others
damping ratio is between 0 and 1 then system is
if damping ratio is one then system is
if damping ratio is greater then one then system is
if Gain cross over frequency(Wgc) > phase cross over frequency(Wpc) then system is
if Gain cross over frequency(Wgc) =phase cross over frequency(Wpc) then system is
if Gain cross over frequency(Wgc) < phase cross over frequency(Wpc) then system is
for stable system
which one is more stable
which system is more accurate
nyquist plot of all pass filter is
For a stabile system, poles must lie in
TF of a system is used to calculate
In an open loop control system
If one of the poles lies in the right half s plane, the system is
If one of the poles lies in the left half s plane, the system is
If all of the poles lies in the left half s plane, the system is
If one of the poles lies in the imaginary axis of s plane, the system is
A control system in which the control action is somehow dependent on the output is known as
For open control system which of the following statements is incorrect ?
Which of the following statements is not necessarily correct for open control system ?
In open loop system
A good control system has all the following features except
The initial response when the output is not equal to input is called
A control system working under unknown random actions is called
The transfer function of a intergral controller is of the type
The BCD number for decimal 347 is
How many different states does a 3 bit asynchronous counter have?
one advantage TTL over CMOS is that TTL is
number of NOR gate is require to make EX-OR gate
number of NAND gate require to make EX NOR gate
number of NAND gate require to make EX OR gate
number of NOR gate require to make EX NOR gate
number of NAND gate require to make NOR gate
number of NOR gate require to make NAND gate
number of NAND gate require to make NOT gate
number of NOR gate require to make NOT gate
number of NAND gate is require to make AND gate
number of NAND gate is require to make OR gate
number of NOR gate require to make AND gate
if both the inputs are high than output also high than we using which type of gate
Racing occurs in which type of flip flop
Memory that loses its contents when power is lost is:
A basic S-R flip-flop can be constructed by cross-coupling which basic logic gates?
To implement 2^n:1 MUX by using 2:1MUX ,the total number of 2:1MUX required
MUX contains AND gate followed by
FLIP FLOPS can store
Race around conditions will occur when
which of the following circuits come under the class of sequential logic circuits
which of the following counters can be used to divide the clock frequency of a microprocessor by 5
which one of the following D/A converter has the resolution of approximately 0.4% of its full scale range
The resistance of armature winding of a dc generator depends on
The commutator segments are connected to the armature conductors of a dc generator by means of
In DC generators the pole shoes are fastened to the pole core by
The bearings used to support the rotor shafts of a dc generator are generally
In DC generators, the cause of rapid brush wear may be due to
The material for dc generator commutator brushes is generally
Armature reaction of an unsaturated DC machine is
Eddy currents are induced in the pole shoes of a DC machine due to
The winding used in Welding generator
In the case of lap winding resultant pitch is
Which of the following components of a D.C, generator provides direct current of a DC generator?
Which of the following types of brush has least voltage?
The armature core of a DC generator is usually made of
DC series generator is used
In DC generators the polarity of the interpoles
In a DC generator the magnetic neutral axis coincides with the geometrical neutral axis, when
Armature coil is short circuited by brushes when it lies
A cumulatively compounded long shunt generator when operating as a motor would be
Which of the following constitute short-circuit in the armature winding.
Number of tapings for each equilizer ring is equal to
In a DC generator stray loss is the sum of
An exciter for a turbo generator is a
The armature of DC generator is laminated to
For a DC generator when the number of poles and the number of armature conductors is fixed, then which winding will give the higher EMF ?
If brushes of a DC generator are moved in order to bring these brushes in magnetic neutral axis, there will be
The speed of a D.C. shunt motor is required to be more than full load speed. This is possible by
In the D.C. motor the iron losses occur in
Which of the following D.C. motor is used to drive a load which has certain minimum value for most of the time and some peak value for short duration?
Which of the following D.C. motor is used to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration?
When the armature of a D.C. motor rotates, e.m.f. induced is
Which method of braking is generally used in elevators?
Which of the following tests will be suitable for testing two similar D.C. series motors of large capacity?
D.C. generators are installed near the load centres to reduce
D.C. generators normally has maximum efficiency around
Which of the following losses are significantly reduced by laminating the core of a D.C. generator ?
D.C. shunt motors are used for driving
Which of the following loss in a D.C. generator varies significantly with the load current?
The hysteresis loss in a D.C. machine least depends on
In Ward-Leonard control  the lower limit of speed is imposed by
Which of the following is the main disadvantage of the Ward-Leonard control method?
Ward-Leonard control is basically a
If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will
The type of braking by interchaning the terminals of armature of D.C. motor
The armature voltage control of D.C. motor provides
Which of the following motors has the poorest speed control?
The plugging gives the
Which one of the following is not necessarily the advantage of DC motors over AC motors?
The speed of a D.C. shunt motor can be increased by
For which types of D.C. motor, dynamic braking is generally used ?
What will happen if the back EMF of a D.C. motor vanishes suddenly?
what is divergence of electric field ?
the ratio between flux density produced in a material to the flux density produced in air.
the reflection coefficient on a lossless line with a short circuit load is given by
the condition for a distortionless transmission line is
......is the reflection co-efficient of an open circuited transmission line
The dominate mode of propagation in microstrip line in low frequency approximation
wave guides are generally made of
VSWR for an ideal antenna is
When electromagnetic waves are propagated in a waveguide
Wave guides are generally made of
The cut off frequency of a wave guide means
In case of matched load
the intrinsic impedance of free space is..... ohms
VSWR for an ideal Antenna is
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,
As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the
Inside a hollow conducting sphere
What is the value of total electric flux coming out of a closed surface?
Which of the following statement are incorrect?
Between a hollow and solid metal sphere, charge reside
What is the ideal value of attenuation for the frequencies in pass band especially for a cascade configuration?
m-derived filter drawback can be overcome by connecting number of sections in addition to prototype and m-derived sections with terminating
In a series resonant band-pass filter, a lower value of Q results in
In a certain parallel resonant band-pass filter, the resonant frequency is 10 kHz. If the bandwidth is 4 kHz, the higher frequency
In a certain low-pass filter, fc = 4.5 kHz. Its pass band is
Which of the following type of filters rejects all frequencies within a specified band and passes all those outside this band?
Which of the following filter characteristic are useful when a rapid roll-off is required.
Which of the following type of filters has a bandwidth same as the critical frequency?
For filtering pulse waveforms, the filters with which of the following characteristic is used?
Which of the following type of filters exhibits a linear phase characteristic?
In band elimination filter, the frequency of resonance of individual arms is
The critical frequency is the frequency at which the response drops from the passband by
Filters with which of the following characteristic provide a very flat amplitude in the pass band and a roll off rate of 20 dB/decade/pole
Which filter exhibits the most rapid roll off rate?
Which of the following type of filters has maximum flat response?
The basic purpose of filter at the output of a rectifier is to
The use of a capacitor filter in a rectifier circui
What is correct about the ripple factor of LC filter?
A third-order filter will have a roll off rate of
The type of filter which passes all frequencies within a band between a lower and an upper critical frequency and rejects all others outside this band
The pointer of an indicating instrument is generally made of
In a CRT the magnitude of the beam current can be adjusted by a front panel control marked
....... bridge is preferred for the measurements of inductance having high Q-factor
the phosphorus used on CRO screen are basically
the nature of calibration signal in a CRO is
In a CRO the time base signal is a
The CRO can directly measure
A dual beam CRO has which of the following?
sawtooth voltage in CRO is produced in
the input impedance of an ideal voltmeter is....
Ionic wind voltmeter is used for measuring
multimeter can be used to measure
the secondary emissions of electrons is due to
The rectifier amplifiers meter are used at...... frequency
The Q-meter works on the principle of
which of the following is an analogue transducer?
.......... is digital transducer
Meggar is used to measure
control springs are made up of
.........is the commonly used material for thermocouple
Which interrupt has highest priority in 8085?
Which of the following is hardware interrupts in 8085?
What is the RST for the TRAP in 8085?
How many interrupts are there in 8085? 
What is clock frequency for 8085?
How many addressing modes are there in 8085?
In how many ways interrupts are classified in 8085?
Which of the following is the Stack used in 8085?
What is HLT instruction in 8085 processor?
Average latency time of magnetic tape memory is of the order
Which of the following is the flag used in 8085 processor?
In 8085 stack pointer is
Inputting the data in the stack is called:
Retrieving the data in the stack is called:
The external system bus architecture is created using the architecture:
the frequency range for satellite communication is
Errors in computer results could be due to?
Stored instructions and data in a digital computer consist of
Binary coded decimal(BCD) numbers express each decimal unit digits as
The central processing unit
A disadvantage of microstrips with respect to stripline circuit is that the former:
Most of the power measuring microwave devices measure
HEMT used in microwave circuit is a
Ionospheric propagation is not possible for microwaves because
A reflex Klystron is a
A laser may be internally modulated at a frequency equal to the frequency separation between axial modes. This phenomenon is termed as
Which of the following diodes has a p-n-i-p structure?
The MASER occurs in the portion of electromagnetic spectrum is
A waveguide acts as a
TWT uses a helix
Vacuum Tube Eventually Fall at Microwave Frequencies Because of their
The Biggest Disadvantage the IMPATT Diode has is its
Due to curvature of earth, microwave repeaters are placed at distance of about
For handling large microwave power, the best medium is
An attenuator is used with TWT to
TWT is basically
The negative resistance in Gunn diode is due to
Which of the following sinusoidal oscillator is preferred for microwave frequencies?
A Klystron is a cavity acting as buncher and catcher is used as microwave tube for
Easily adjustable tuning component in a waveguide is
At microwave frequencies, the size of antenna becomes
IRIS is used to overcome
The microwave range is
Full form of SONAR
tunnel diode does nor exhibit
lowest layer of communication system
isdn full form
which circuit transmit two messages simultaneously in one direction
what is not the topology
which classes are used in the network
what are the two versions in IP
how many bits in IPV4 adress
how many bits in IPV6 adress
how many osi layer in x.25
192.168.1.5 is a
Which protocol does DHCP used at the transport layer
The size of IP address in IPv6 is
The header length of an IPv6 datagram is _____.
In the IPv6 header, the traffic class field is similar to which field in the IPv4 header?
When we represent data in Code Division Multiple Access, a station is idle then it sends
In Code Division Multiple Access, orthogonal sequence is unique for each
The network layer protocol of internet is
Which type of address is not used in IPv6
Which of the following feature is present in IPv4 but not in IPv6.
Which of the following field determines the lifetime of IPv6 datagram
The op amp can amplify
The input offset current equals the
When the two input terminals of a diff amp are grounded
For an Op-amp with negative feedback, the output is
A common-mode signal is applied to
The common mode voltage gain is
The input stage of an op amp is usually a
The common mode rejection ratio is
The typical input stage of an op amp has a
The input offset current is usually
The use of negative feedback
With both bases grounded, the only offset that produces an error is the
The voltage gain of a loaded differential amp is
At the unity gain frequency, the open loop voltage gain is
If the cutoff frequency is 20 Hz and the mid band open loop voltage gain is 1,000,000 the unity gain frequency is
With zero volts on both inputs, an OP-amp ideally should have an output
Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is
unity gain amplifier is a
When the initial slope of a sine wave is greater than the slew rate
A 741 C contains
Approximately what is the frequency limit of the optical fiber?
A single fiber can handle as many voice channel as a
An incident ray can be defined as
The term dispersion describes the process of
Which of the following terms describes the reason that light is refracted at different angles?
The term critical angle describes
The cladding which surrounds the fiber core
What is reflective index number
The terms single mode and multimode are
The higher the index number
The three major groups in the optical system are
As light is coupled in a multipoint reflective device, the power is reduced by
When connector losses, splice losses, and coupler losses are added, what is the final limiting factor?
What is responsivity of a light detector
Loss comparisons between fusion splices and mechanical splices are
The mechanical splice is best suited for
EMD is best described by which statement?
Which of the following cables will have the highest launch power capability?
The term power budgeting in optical fiber communication refers to
The band of light wavelengths that are too long to be seen by the human eye
In which type of the operating system response time is crucial
Bring a page into memory only when it is needed is called:
When a thread waits indefinitely for some resource, but other threads are actually using it is called?
What are the two types of Semaphore?
What are the requirements for the solution to critical section problem?
The Banker's algorithm is used?
A page fault occurs when
Which of the following memory unit that processor can access more rapidly?
The operating system manages
Which is not the function of the Operating System?
When a thread waits indefinitely for some resource, while other threads using it is knows as:
The chunks of a memory are known as
Operating system keeps the information of files in a table called
When the memory space available for a process is not contiguous we need to perform:
The percentage of times a page number is found in the TLB is known as:
Page-Table length register indicates size of
If a page number is not found in the TLB, then it is known as a :
A page table contains?
The operating system which reads and reacts in actual time?
Virtual memory is:
Which of the following methods is easily applicable to control the speed of the squirrel-cage induction motor?
The auto-starters (using three auto transformers) can be used to start cage induction motor of the following type
When the equivalent circuit diagram of double squirrel-cage induction motor is constructed the two cages can be considered in
Rotor rheostat control method of speed control is used for
In three-phase squirrel-cage induction motors rotor conductors
In a three-phase induction motor, the number of poles in the rotor winding is always
A 3-phase induction motor stator delta connected, is carrying full load and one of its fuses blows out. Then the motor
A 3-phase slip ring motor has
In a three-phase induction motor
In three-phase induction motors sometimes copper bars are placed deep in the rotor to
The stating torque of the slip ring induction motor can be increased by adding
What will happen if the relative speed between the rotating flux of stator and rotor of the induction motor is zero ?
The torque developed by a 3-phase induction motor least depends on
In case of a double cage induction motor, the inner cage has
type of induction motor used for driving high inertia loads
A squirrel cage induction motor is not selected when
The torque of an induction motor is
The rotor of an induction motor runs at
Insertion of resistance in the stator of an induction motor
In a three-phase induction motor power factor at starting is
Select the conventional source of energy?
Which option represents the commercial sources of energy
Equipment used for pulverizing the coal is known as
Which one is the proper indication of incomplete combustion
Rankine efficiency of a steam power plant
Cetane number of high speed diesel available in market is
 Air standard efficiency of a diesel engine depends on
A two stroke engine may be identified by
The main source of production of biogas is
In fuel cell
The overall efficiency of thermal power plant is equal to
In a piston the maximum temperature occurs at
In regenerative cycle feed water is heated by
Economiser is used to heat
The modern steam turbines are
The draught in locomotive boilers is produced by
The artificial draught normally is designed to produce
Maximum efficiency of an open cycle gas turbine is nearly
Overall efficiency of gas turbine is
The performance of engines of different HP, RPM and sizes can be compared on the basis of
The reason for synchronous motors are generally not self-starting
A synchronous motor can develop synchronous torque
A synchronous motor can be started by
A three-phase synchronous motor will have
The maximum torque which a synchronous will develop at rest for any angular positions of the rotor, at rated stator supply voltage and frequency, is known as
The total steady state to drive synchronous motor and the load at synchronous speed is known as
In a synchronous motor total number of rotor slots is
The power developed by a synchronous motor will be maximum when the load angle is
A synchronous motor can be used as a synchronous capacitor when it is
An over-excited synchronous motor takes
In case of a 3 phase synchronous motor, maximum speed variation is
In which range the cost of a synchronous motor can be comparable to the cost of a induction motor ?
In which situation the negative phase sequences in a three phase synchronous motor exist
What would happen if the direction of the field current in a 3 phase synchronous motor which is running clockwise is reversed
Hunting in a synchronous motor can be minimized by
The minimum armature current of the synchronous motor corresponds to operation at
The back EMF of a synchronous motor depends on
The oscillations in a synchronous motor can be damped out by
The shaft of synchronous motor is made of
If the capacitor of a single-phase motor is short-circuited
In a capacitor start motor, the phase displacement between starting and running winding can be nearly
Which of the following motor will give relatively high starting torque ?
In a hysteresis motor, the position of shaded pole with respect to main pole determines
The rotor of which motor does not have winding on it?
If a single phase motor runs slow, the probable cause may be
The direction of rotation of an hysteresis motor is determined by
The range of efficiency for shaded pole motors is
The power factor of a single-phase induction motor is usually
A hysteresis motor works on the principle of
A reluctance motor is preferred for which of the applications?
A single-phase induction motor is
Single phase induction motor usually operates on
The rotor for a hysteresis motor
The disadvantage of shaded pole motor is
Which of the following motors will operate at high power factor ?
As hysteresis motors are free from mechanical and magnetic vibrations therefore these are considered as suitable for
Torque developed by a single phase induction motor at starting is
Which single phase ac motor is commonly used for record players and tape recorders?
In a split phase motor, the ratio of number of turns for starting winding to that for running winding is
At 0K temperature semiconductor behaves like a.........
Which of the following is fastest semiconductor
common drain amplifier is a
the transconductance curve of a JFET is
In a thyristor holding current is
In a thyristor, ratio of Latching current to holding current is
SCR is a
Which one of following device operates by transfer electron mechanism?
Which of the following device exhibits differential negative resistance?
Which device is usually used as stable reference voltage in linear voltage regulator?
In ideal, the equivalent of FET contains
PIN diode acts as .... when forward biased
Mobility of electrons is highest in
The energy gap in a semiconductor
In JFET drain current is maximum when VGS is
secondary breakdown occurs in
early effect in BJT is caused by
The crystal structure of silicon is
which photo conductor is commonly used?
the crystal structure of silicon ia
A JFET is a
once scr start conducting a forward current, its gate losed control over
what is UJT
What is SCR
which component is considered to be an OFF device?
The efficiencies of transformers compared with that of electric motors of the same power are
Minimum voltage regulation occurs when the power factor of the load is
The rating of transformer may be expressed in ____________.
Part of the transformer which is most subject to damage from overheating is
What will happen if the primary of a transformer is connected to D.C supply?
If a transformer is switched on to a voltage more than the rated voltage
The maximum load that a power transformer can carry is limited by
The hum in a transformer is mainly due to
The noise produced by a transformer is
Which of the following parts of a transformer is visible from outside ?
For a transformer, operating at constant load current, maximum efficiency will occur at
In a transformer the resistance between its primary and secondary should be
A Step Up transformer _____________
In a given transformer for a given applied voltage, the losses which remain constant irrespective of load changes are
A shell-type transformer has
The size of a transformer core will depend on
The function of breather in a transformer is
Negative voltage regulation is indicative that the load is
An ideal transformer is one which has
Power transformers are generally designed to have maximum efficiency around
Harmonics in transformer result in
The friction losses in real Transformers are _________?
An Isolation Transformer Has Primary to Secondary turns ratio of __________
In an Auto Transformer, The Primary and Secondary are__________Coupled
The leakage flux in a transformer depends upon
The magnetizing current of a transformer is usually small because it has
The thickness of laminations used in a transformer is usually
The chemical used in breather for transformer should have the quality of
In a Transformer , The primary flux is always _________ the secondary flux.
What would happen if we operate a 60 Hz Transformer on 50 Hz Source of Supply?
feedback regulator s are used to provide
The input circuit of CB amplifier is
For a step input ,output of integrator is
The control signal for sample and hold is applied to
Instrumentation Amplifiers are used primarily in
A comparator with hysteresis
The zero level detector is application of
The lowest frequency of LPF is
Notch filter is
Efficiency in maximum power transfer is
Internal resistance of ideal current source is
With increase in length of conductor,its resistance
The IC NE/SE 566 is
Oscillators employ
Colpitt oscillators are for
Internal resistance of ideal voltage source is
The emitter of a transitor is doped
Efficiency of a full wave rectifier is
In thyristers, holding current is
An astable multivibrator has
Permanent magnets are used in
Which of the following substance shows least permeability
which of the following piezoelectric material can be used for very high frequencies
An oscillator that is most stable having simple circuit is
what is the unit of resistance ?
Unit of capacitance is
Unit work is
Piezo is a greek word for
ML-1 T-2 IS DIMENSIONAL FORMULA OF
when material become a superconductivity its resistance become what is the value?
The minimum distance between the source and the reflector for hearing a distance echo is
forbidden gap for Si
which one of the following a unit less quantity?
which one of the following not a unit of length ?
the strength of a semi conductor crystal comes from?
SI unit of electric current
Admittance is reciprocal of
output of laser beam is
A clearly separate echo of a sound is heard when the minimum distance of the reflecting surface from the source of sound is
The relative permeability of ferromagnetic material is
Which of the following quantities remain the same in all parts of a series circuit?
Which one of the following is the best conductor of electricity?
The property of a conductor due to which it passes current is called?
Varistors are
Out of the following the material having a negative temperature co-efficient of resistance is?
Which of the following is the passive element?
Which of the following is a bilateral element?
A field line and an equipotential surface are
A ferrite is
Vacuum tubes eventually fail at microwave frequencies because of their
Automatic gain control is used
In practical, waveguide act as
which is a 8 bit microprocceser
HDLC is
The period of time between an allocation and its subsequent disposal is called
what is unit of energy?
What is the change we can observe in flux if transformer connected to dc supply?
Primary winding of a transformer
The resistance of metallic wire would
what will be the current across switch when it is in off position?
If the modulation index of an AM was is changed from 0 to 1. The transmitted power
random access memory is - storage device
The maximum range of a transmitter depends on
Field are said to be circularly polarised if their magnitude are
what is modulation?
which of the following is dynamic characteristic
modulation is done in
zero initial condition means that the system is
which of the following storage elements can be programmed after packaging?
which of the following is a volatile memory
As EMW travels in free space only one of the following can happen to them
how much time take execution of programme in microprocessor?
stepped core is used in transformer in order to reduce
commutation condition of full load for large dc machine can be efficiently checked by
the commutator of dc generator acts as
the input resistance of FET is of order of Mega ohm
the threshold voltage of n channel MOSFET can be increased by
to obtain very high input and output impedance in a feedback amplifier the topology mostly used is
the frequency of ripple in the output voltage of three half controlled bridge rectifier depends on the
skin effect depends on
the number of comparator in 4 bit flash ADC is
the bode- plot valid for
Which layer of OSI is also called syntax layer
why is the Transmission or distribution voltage always multiple of 11, e.g. 33000, 6600, 11000, 440 volts etc.?
the magnetic flux inside the exciting coil.?
Man made noise is caused by:
a cro is a
fet has a offset voltage of about
Air blast circuit breakers are preferred for
Number of states in a 4 bit Jhonson counter is
The data rate of the ISDN Basic access B channel is
How many pairs of stations can simultaneously communicate on Ethernet LAN
The transmission signal coding method of T1 carrier is called
Which of the following is not possible in a digital (data) PBX using twisted pair transmission
Amplitude modulation contains
which of the following requires more power for transmission
The frequency modulated (FM) radio frequency range is nearly -
Most commonly used filters in SSB generation are
Following type of multiplexing cannot be used for analog signalling
Quantization noise occur in
which system used india for tv
The frequency range of ELF signals
The frequency range of super low frequency
The frequency range of low frequncy signals
The frequency range of THF
in fdm system used for telephone, which modulation scheme is adopted?
What is the IM Frequency of Amplitude Modulation?
a PLL can be used to demodulate
pre- emphasis is used to boost up
Ultrasonic waves are produced by
which system is free from noise?
To demodulate PCM, it is first converted in to
the principal merit of PCM system is its
FM broadcast band lies in
MAN stands for
The type 0 system has a finite non zero value of
The type 1 system has a finite non zero value of
The type 2 system has a finite non zero value of
An automatic toaster is
Any externally introduced signal affecting the controlled output is called a
Which of the following devices are commonly used as error detectors in instruments ?
Which of the following should be done to make an unstable system stable?
Which of the following increases the steady state accuracy?
As a result of introduction of negative feedback which of the following will not decrease ?
Regenerative feedback implies feedback with
Which of the following is an open loop control system.
A control system with excessive noise, is likely to suffer from
Zero initial condition for a system means
The transfer function of a proportional controller is of the type
The transfer function of a rate controller is of the type
Transfer function of a system is used to calculate which of the following ?
On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?
The transient response, with feedback system,
The second derivative input signals modify which of the following?
The voltage, in force-current analogy, is analogous to
which of the following is a self-complementing code
which one of the following can be used as parallel to series converter
a carry look ahead adder is frequently used for addition because, it
a dynamic RAM consists of
an R-S latch is a
Decimal equivalent of hex E5 is
half adder is also known as
a comparison between serial and parallel adder reveals that serial adder
which of the following gates is known as coincidence detector
the number of distinct Boolean expression of 4 variables is
the minimum number of comparators required to build an 8 bit flash ADC is
a memory system of size 16KB is required to be designed using memory chips which have 12 address lines and 4 data lines each. number of such chips required to design the memory system will be
a 10bit A/D converter is used to digitize an analog signal in 00.5V range. the maximum peak to peak ripple voltage that can be allowed in DC voltage is
for DAC the resolution required is 50mV and the total maximum input is 10V. the number of bit required is
how many address line are needed to address each memory location in 2048*4 memory chips
the minimum number of 2 and 1 multiplexers required to realize a 4 to 1 multiplexer is
the number of comparators required in a 3bit comparator type ADC is
the decimal equivalent of the hexadecimal number E5 is
which one of the following will give the sum of full address as output
Which of the following use least power
Binary equivalent of (45)10 is
In computer memory size, Kilo equals to
universal logic gate is......
stair case logic circuit is example of ______
find the odd one.
A portable instrument is likely to have....... damping
The CRO provides a ........ visual display of the signal waveshape on a screen
A dual trace CRO has ..... vertical and.......... horizontal amplifiers
To send 10% of the main current through a moving coil galvanometer of resistance 99 ? the shunt required is ????..
standardization of potentiometers is done in order that, they become
maxwell bridge used for which measurement
wattmeter measures
Which instrument consume maximum power during measurement
Which transducer convert heat eneargy into electrical eneargy
An attenuator is used with TWT in
The bridge which is used to measure value of resistance below 1 ohm is
wien bridge measures basically
The household energy meter is
The pointer of an indicating instrument should be
The function of shunt in an ammeter is to
A PMMC meter can be used as
A moving iron instrument can be used for
The input impedance of CEO is
A linear displacement digital transducer generally uses
The device having highest photo sensitivity is
Modern computer process
Full form of SMPS?
Full form of USB?
Data line is
Address line is
Microprocessor 8085 have address line
Microprocessor 8086 have address line
The field ,which is never present in an assembly language statement,is
Following is a 16-bit register for 8085 microprocessor
a sequence of instruction designed to perform a particular task is
a set of progran written for a microproccesr based system is called as
intel 8085 is a popular............. chip
arithmetic and logic instruction executes by
In any processor speed is rated in terms of
Which of the following processor is 1st invented by intel
Which of the following processor is not a 8 bit
What is the best method of biasing in bjt
Which one is not a non vector intrupt
Which of the following is a vector address for INTR
In a processor address line represents
The modes in a reflex Klystron
Klystron operates on the principle of
A magic-Tee is
Which of the following can be used for amplification of microwave energy?
In microwave power measurements using bolometer, the principle of working is the variation of
In mode operation of magnetron, the spokes due to phase focusing effect rotate at an angular velocity corresponding to
The biggest advantage of the TRAPATT diode over the IMPATT diode is its
A varactor diode may not be useful at microwave frequencies
The negative resistance in a tunnel diode
Microwave antenna aperture efficiency depends on
For Gunn diodes, gallium arsenide is preferred to silicon because the former
For best low-level noise performance in the X-band an amplifier should use
Travelling wave parametric amplifiers are used to
The major advantage of TWT over Klystron
In Microwave we consider the elements as
Which of the following methods can be used to overcome short term fading in microwave communication links
For handling large microwave power, the best medium is
A waveguide section in a microwave circuit will act as a
The noise produced in a microwave tube due to random nature of emission and electron flow is called
The use of duplexer is
One of the reasons why vacuum tubes eventually fail at microwave frequencies is that their
Which one of the following is a transferred electron device?
A PIN diode is suitable for use as a
The semiconductor diode which can be used in switching circuits at microwave range is
A Microwave tube amplifier uses an axial magnetic field and radial electric field. This is the
Dual-stack approach refers to
If the value in protocol field is 17, the transport layer protocol used is ____.
What should be the flag value to indicate the last fragment?
Which of these is not applicable for IP protocol?
Fragmentation has following demerits
Which field helps to check rearrangement of the fragments?
What is the minimum header size of an IP packet?
Which data communication method is used to transmit the data over a serial communication link?
Which of following provides reliable communication?
What is the address size of IPv6 ?
What is the size of Network bits & Host bits of Class A of IP address?
What does Router do in a network?
The Internet is an example of
What does protocol defines?
What is the uses of subnetting?
Repeater operates in which layer of the OSI model?
Which data communication method is used to transmit the data over a serial communication link?
Suppose two IPv6 nodes want to interoperate using IPv6 datagrams but are connected to each other by intervening IPv4 routers. The best solution here is
Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits
Why IP Protocol is considered as unreliable?
The input impedance of a BIFET op amp is
The open-loop voltage gain of an op-amp is the
The 741 C has a unity gain frequency of
An op amp has a voltage gain of 200,000. If the output voltage is 1 V, the input voltage is
A 741 C has
The voltage follower has a
An instrumentation amplifier has a high
In a differential amplifier, the CMRR is limited mostly by the
The input signal for an instrumentation amplifier usually comes from
In a nonlinear opamp circuit, the
To detect when the input is greater than a particular value, use a
The voltage out of an opamp Schmitt trigger is
Hysteresis prevents false triggering associated with
If the input is a rectangular pulse, the output of an opamp integrator is a
When a large sine wave drives a Schmitt trigger, the output is a
Which one of the following is an advantage of hydro-electric power station
Diesel engine fuels are rated by
The critical pressure ratio of a convergent nozzle is defined as the ratio of
Curtis turbine is a
The efficiency of a modern boiler using coal and heat recovery equipment is about
The efficiency of a thermal power plant improves with
Steam engine used in locomotive is
Which of the following methods is used for governing Steam turbines
In a surface condenser if air is removed, there is
For the safety of a steam boiler the number of safety valves fitted are
Major constituent of methane gas is
Which of the following material can be used as a moderator ?
The capacity of large turbo-generators varies from
Primary air is that air which is used to
Bucket elevators are used for
The value of the reheat factor is of the order of
What is Pulverized coal
Heating value of coal is approximately
In a power plant, coal is carried from storage place to boilers generally by means of
Pressure of steam in condenser is
A synchronous motor will always stop when
The rotor copper losses, in a synchronous motor, are met by
In synchronous motor, which one of the following losses will have the highest proportion?
The type of motor in which the stator and rotor magnetic field rotate at the same speed?
Synchronous motors are
A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because
To limit the operating temperature an electrical machine should have proper
The armature current of the synchronous motor has higher values for
Power factor of a synchronous motor is unity when the armature current is
The back emf in the stator of a synchronous motor depends on
In a synchronous motor, the torque angle is the angle between
The hunting in a synchronous motor takes place when
Which synchronous motor will be smallest in size ?
If the field of a synchronous motor is under-excited, the power factor will be
In a synchronous motor which loss does not vary with load ?
A high starting torque synchronous motor has
A 3 phase, 400 V, 50 Hz salient pole synchronous motor is running on no load. What would happen if there is break in the excitation winding of the motor
The size of a synchronous motor decreases with the increase in
In a three phase synchronous motor, the magnitude of field flux
The speed of a synchronous motor
The starting capacitor of a single phase motor is
A capacitor start, capacitor run single phase induction motor is basically a
Under normal operating conditions which motor can run at 5000 rpm ?
Which of the following single-phase induction motors is generally used in time phonographs?
The wattage of motor for driving domestic sewing machine will be around
The wattage rating for a ceiling fan motor will be in the range
Which of the following motors can be used for unity power factor ?
Single phase motors are commercially manufactured up to
Which of the following single phase motors will operate at high power factor ?
A motor suitable for signaling device is
In portable tools the speed of the driven shaft is reduced by
In case of split phase motors the phase shift is usually limited to
Which motor will make least noise ?
In a shaded pole single-phase motor, the revolving field is produced by the use of
The value of starting capacitor of a fractional horse power motor will be
The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be
Which of the following is non-reversible motor ?
A motor generally used in toys is
Which of the following applications would need the smallest size of motor ?
 When a dc series motor is connected to ac supply, it will
A SCHOTTKY diode is a
FET is
FET is a
Another name for zenar diode is
A JFET has three terminals, namely
A JFET has three terminals, namely
Input impedance of MOSSFET is
MOSFET uses the electric field of
In MOSFET devices the N-channel type is better than P-channel type in the following respects
The operation of JFET is similar to the valve
In a MOSFET, the polarity of the inversion layer is the same as that of the
IGFET is a
A depletion MOSFET differs from a JFET in the sense that it has no
A JFET is a driven by
The extremely high input impedance of a MOSFET is primarily due to the
A D-MOSFET can operate in the
CMOS stands for
A D-MOSFET is considered to be a
The gate of a JFET is biased
CMOS devices use
Most small-signal E-MOSFETs are found in
The main advantage of CMOS is its
The input impedance of a JFET is compared to an ordinary transistor is
The main factor which makes a MOSFET likely to breakdown during the normal handling
In an E only MOSFET, drain current starts only when Vgs is
the transit time of the current carrier through the channel of an FET decides its ______ characteristics.
theoretical efficiency of halfwave rectifier is
which of the following push-pull amplifiers has highest plate circuit efficiency?
What will be the value of resistance if n number of resistance are connected in parallel
When n number of capacitors are placed in parallel what will be the total capacitance?
In schottky diode current flows due to
Stabilization factor of fixed bias configuration is
the early effect in a bipolar junction transistor is caused by
to obtain very high input and output impedance in a feedback amplifier the topology mostly used is
in a common emitter amplifier the unbypassed resistance provides
The Power Factor of an AC circuit is givan by
The open loop gain of an amplifier is 200.if negative feedback with B =0.2 is used, the closed loop gain will be
the push-pull circuit
at resonance the circuit power factor is
a tuned amplifier use load as
Amplifier uses which feedback
Oscillator uses which feedback
varicap diode is called
Which of the following amplifier ?? eliminates the Cross over distortion
in a class-B amplifier the output current flows for- - - -
Among the following the weakest binding is
which is widely used in academic testing ?
Which of the following is the passive element.
S.I. Unit of power.
resistance is reciprocal
which made filament of electric bulb.
Out of the following which is an insulating material?
The insulation on a current carrying conductor is provided
Which of the following material has nearly zero temperature co-efficient of resistance?
Nichrome wire is an alloy of
Sparking occurs when a load is switched off because the circuit has high
Which of the following materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators.
The number of electrons in the outer most orbit of carbon atom is
Pedagogy is a science which deals with
what is the reciprocal of conductance(G)
which od the following does not produce radioactive fall out
when blue glass is heated the color of glow will be
which color light has the longest wavelength
a nichol prism is based on the action of
the refractive index of canada balsam is
The ratio of secondary to primary turns is 4:5. If power input is P, what will be the ratio of power output (neglect all losses) to power input ?
transformer transform?
Cells are connected in parallel in order to get.........
The difference between synchronous speed and actual speed is called.
The condenser is connected in parallel to the supply line.
Dielectric strength of mica is
In how many different modes a universal shift register operates?
Expand LTE
BJT is a bipolar device, then what about pn junction diode
Which of the following is a good conductor
Which flip flop is used for delay line
Which of the following is a device is having variable resistance with light
Potential energy required to move an electron from silicon is
Graphite is a conductor?
Which of the following is fastest memory
The dipole moment of a dipole in an uniform external field E is P then , the torque acting on the dipole is
which memory is assembled between main memory and CPU ?
which method is used to to establish priority by serially connecting all devices that request an interrupt?
which register is memory pointer of instruction
header of frame generally contains
when one or more bits in a data unit has been changed during the transmission the error is called
______ is a collection of point to point links that may form a circle
which of the following uses FIFO method
Heap is an example of
in delta connected generator all of the phase voltages are
Henry is equivalent to
in dc generator s, current to the external circuit from armature is given through
A fuse is connected
The sub cooling in a refrigerator cycle
Power factor of a purely resistive circuit is:
When a body hits an obstacle, the force with which it hits the obstacle depends upon its
Whenever a source of sound moves towards an observer
Moving electric charges will interact with
What is the frequency limit of copper wire?
When bias applied to a vari-cap diode is increased, its capacitance
Voltage induced in a loop of wire rotating in a strong and steady magnetic field is
Permeance related to Reluctance as?
Ideal transformers cannot be characterised by
An inverter converts?
The data type defined by user is
if our eye is a camera then it is considered as how many mega pixel
Narrow pulse systems require
Light is best described as a form of
A scr is a ...... Switch
Siemens is the unit of
charging current in transmission line
transformer connection at the sending end of a transmission line is usually
the outer most shell of carbon has
not gate is a
If two resistors have the same voltage drop in a series circuit, it means:
one-to-one communication involves__________ addressing
In high power AM transmitter,modulation is done at
The doppler effect is used in
The highest modulation frequency used in AM broadcasting is
Sky wave propagation is used for
Which modulation system is most noice resistant
The bandwidth needed for telephone channel is
Fidelity in a communication receiver is provided by
As compared to FM transmitters, AM transmitters are
which of the following is different from others
A modulation system most noise immune is
The frequency band used by most satellite is
TDMA stands for
Noise figure is used as a figure of merit of
QAM stands for
ASK stands for
FSK stands for
The Most Common Modulation System Used for telegraphy is
VSB is an Abbreviation if vestigial Sideband, is derived by Filtering
The Hartely Law State that
The FM Signal with a Modulation index mf is passed through a Frequency Tripler. The Wave is the Out Put of the Tripler will have a modulation Index of
In high power AM transmission, Modulation is done at
In AM transmission the Frequency, Which is not transmitted is
FM Broadcast band lies in
The Modulation System inherently is most Noise Resistant in
The magnetic flux linkage, in force-current analogy, is analogous to
The current, in force-current analogy, is analogous to
Which of the following statements is correct for any closed loop system ?
Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?
Due to which of the following reasons excessive band width in control systems should be avoided ?
In a stable control system backlash can cause which of the following ?
In a control system the output of the controller is given to
A controller can be considered as a
The on-off controller is a
The capacitance, in force-current analogy, is analogous to
The transient response of a system is mainly due to
Adding of zeros in the transfer function causes
The temperature, under thermal and electrical system analogy, is considered analogous to
for minimum phase system
for non minimum phase system
break away point must be lie on.?
with feedback the transient response of the system as compared to that without feedback
negative feedback in amplifier
The Damping ratio of a critical and undamped sustem is
The Bode diagram method is applied to
In 8 bit microprocessor , 8 bit refers to ?
which counter use in digital voltmeter?
what is the long form of RAM
Logical shift right circuit can be used to implement?
In AND gate ,what is output if all input will be one
Which of the following gate is parity generator?
Which flip flop is called as frequency divider?
Which of the following is the Universal Logic Gate?
binary number require ____ states or digits
smallest unit of computer memory is
____is associated with third generation
the_________ family of ICs has better noise immunity
TTL operates from a________ volt power supply
the 74xx series has fan out of
a Morden digital computer has :
which type of computers accuracy is super high
how many pins intel 8080 has?
The bit size of first practical microprocessor was
The number of comparator circuits required to build a 3 bit simultaneous A/D converter is
which of the following codes is a weighted code?
An ammeter is a
The accuracy of multimeter is
The scale of hot wire ammeter is
A dynamometer wattmeter can be used for
An induction wattmeter can be used for
which instrument is based on the principal of induction
A voltmeter using thermocouple measures
LVDT is a(n)_________transducer
Select the correct statement:
which of the following instruments can not be made using heating effect?
the inductance of high Q inductor can be meadured using
moving iron used on
Magnetic effect of current is used in
which of these instruments has higher power consumption
for measuring mutual inductance we can use
when deflecting torque and breaking torque in an energy meter are zero
which instrument needs creep compensation
De sahity bridge is very widely used due to
A digital voltmeter measures
The function of reference electrode in a pH meter is to produce a
Ready signal in 8085 is useful when the CPU communicate with
A set of instruction that tell computer what to do is known as
The fastest translator that converts high level language is
Program counter in 8085 Microprocessor is
the number of flags in 8085 micro processor is
the 8085 micro processor is available in
which of the following up has 16 bit data bus
which of the following is not an 8085 flag
which of the following is not a two byte instruction
which of the following is a data transfer instruction
which of the following is used to mask the bits
Which group of instructions do not affect the flags?
Out of the following which is not the flag in 8085 microprocessor
If the 8085 adds 87H and 79 H, which of the following flags will become 1
If interrupt arrives on the three lines INTR, RTS 6.5 and RTS 7.5, which of them will the 8085 processor acknowledge?
Which of the following is a math co-processor?
Number of output pins in 8085 microprocessor is ?
A microprocessor is ALU and
Ouput of a assembler is reffer as what ?
The highest priority in 8085 microprocessor system is
Which of the following is not applicable for IP?
Which of the following field in IPv4 datagram is not related to fragmentation?
The TTL field has value 10. Maximum of how many routers can process this datagram?
In communication satellite, multiple repeaters are known as?
A subset of a network that includes all the routers but contains no loops is called
In version field of header IPv4, when machine is using some other version of IPv4 then datagram is
Parameter that is normally achieved through a trailer added to end of frame is
Layer that are used to deal with mechanical and electrical specifications are
Combination of two or more networks are called
End to End layer is
in Bridge
802.5 topology is called
255.255.0.0 is default mask of ............. IP address.
............. layer is responsible for ENCRYPTION.
FDDI is an example of which of these topologies
of the three types of networks the ….... covers the largest area
In file transfer protocol, data transfer can be done in
What is the access point in wireless LAN
which size IPv4 Address??
A closed path made by several branches of the network is known as
which insulation is most widely used for covering wires or cables used in internal wiring
ampere second is the unit of
nicol prism is made from
smallest wavelenth is of
beats are the result of
Refraction index will be least case of
The refractive index for diamond is
During interface of light
solar cell is an example of
which of the following frequency may not be detected by human ear?
The velocity of sound waves will be least while traveling through
the velocity of sound will be least in
mmf of magnetic circuit is analogous to which electrical quantity
Unit of mmf is
conductance is analogous to
For vacuum susceptibility
The unit of susceptibility is
Candela is the unit of
Type of Earthing used in power Generation station is
The curie Temperature of Iron is
framing of bits is done in
the portion after the words www identifies a
a home user dials into
STP helps eliminate
current at the output of stepdown transformer can be....
What is the unit of electrical energy?
street lights connected in?
Constantan material contains how much percent of copper & nickel
which type of instrument have same calibration on ac and dc??
laminations of core are generally made of
What does LED stand for?
DAC stands for
IC stands for
MOV stands for
CC stands for
Which of the following is a semiconductor memory
the units whose sizes cannot be choosen independently are called
thermocouple are
Macromedia is a name of a company related with ____
personal computers are also called:
Integrated circuits contains
Word length of a personal computer is ______
X-MP is model of:
for binay system radix is
smallest memory size
which is not a unit of time?
Minimum number of NAND gates required for a Half Adder is
Number of Nor gates required to realize Ex-Nor operation is
……….. is a storage area to store emails
in an office network ________ are commonly shared
many input and 1. output is a
Ramp signal is which type of signal ?
If the total energy of signal satisfies the condition zero < Energy< infinity is called ?
A periodic function of half - wave ssymmetry is necessary ?
The spectral density of white noise is ?
The Fourier transform of a Gaussian time pulse is ?
The autocorrelation functions of an energy signal has ?
Probability density function of thermal noise is ?
Thermal noise power is proportional to ?
a 64 bit word consist of ________ Nibble
comparator circuit are used in
the noise figure of ideal receiver is
the aspect ratio in TV receiver equals to
in TV transmission the type of modulation used for picture
the loss produced by the insertion of the network or line is referred as
a series capacitance used in filter circuit represent s
the internal impedance of an ideal voltage source is
the Laplace transform of a unit impulse function is
in resonance circuit the power factor at resonance is
the ASCII code is
The modulation normally used with the digital data is:
The frequency of a signal is inversely proportional to
The most common modulation system used for telegraphy is
The highest modulation frequency typically used in AM broadcast is ?
The channel bandwidth of television broadcast is ?
The bandwidth requirement of telephone channel is ?
The high frequency range extends from ?
The very high frequency ( VHF ) range extends from ?
The Ultra high frequency ( UHF ) range extends from ?
Frequency band for mobile communication is ?
Bandwidth of fiber optic communication is ?
Bandwidth of colour TV transmission is of the order of ?
FM broadcast lies in which band ?
FM broadcast is done using ?
Static noise has maximum effect on radio transmission during
In which of the following frequency bands are the standard AM radio broadcast stations ?
The bandwidth required for base-band signals in telephony is ?
serial data transfer takes place by how many mode.
which of the following instruction has more preference than others
Which of the folloing is not a purpose of modulation
The AM broadcast band is given by
The filter required to obtain SSB from DSB signal is
Which of the following analog modulation scheme requires the minimum transmitted power and minimum channel bandwidth?
Which system is less affected by noise?
The disadvantage of FM over AM is that
Which of the following logics has excellent noise margin?
Mnemonic symbols are used
Which of the following is not a magnetic memory?
The bipolar technology giving the fastest logic family is
which of the following codes is an unweighted code?
what is the frequency of DC signal
Which logic is mostly used in microprocessor chips
A circuit consists of 7 NOT gates connected in cascade, it acts like
Race around condition always arise in a
What are the inputs of jk flip flop in toggle mode ?
D flip flop is said transparent when
In digital techniques which are said to be universal gate ?
which is a vectored interrupt from following ?
A three state buffer gives output as ?
which of the following is digital device ?
Binary number system has how many digits ?
A digital circuit that can store on a bit is a ?
a nibble is equal to how many bits ?
In digital system 1 byte is equal to how many bits
what is Boolean algebra known as
the number of minimum clock cycles in a machine cycle for 8085 are
The CALL instruction is comes under the
fastest data transfer mode in DMA controller
slowest data transfer mode in DMA controller
8085 is based on which technology
number of hardware interrupts in 8085
number of software interrupts of 8085
which is the first Microprocessor
What is the frequency of 4004 microprocessor
Which of the following is a hardware intrupt
The maximun integer which can be stored on an 8- bit accumulator is
how many bits in MAC adress
ACK indicates reception of
binary coded decimal (BCD) numbers expressed each digit as a
The invention of transistors was in ______ generation of computers
first generation period of computer between
in which unit is the performance of cache memory measured
the microprocessor 8085 has-----basic instructions and ----- opcodes
An opcode
A triple bus architecture based processor has
What is unit of light year
Which one of the is distributed parameter
Which one is fastest semiconductor memory
The adverse effect of noise in communication system is maximum in
1 kilo watt hour equal to
kirchhoffs laws applicable for
resistance of wire varies inversely as
ohms law applicable for
auxiliary memory is
control memory adress register is present in
PSEUDO INSTRUCTIONS ARE
which of the device should get higher priority in assigning interrupts
associative memory is a
KVL is concerned with
rating of fuse wire expressed in
the insulation on a current carrying conductor is provided to prevent
number of bits needed to address 4K memory
cells commonly used as standard cells are
which of the following devices can be turned ON or OFF by applying gate signal
for octal system radix is
the function of transformer is
The specific gravity of lead acid battery is
In Induction motor the slip ranges from
The power factor of arc in circuit breaker is
The most popular Circuit Breaker technique employs
The characteristic impedance of a coaxial cable is
The working function of a coaxial cable is similar to that of
The IF frequency of FM modulation is
Integration of PM modulation will result in
Find out the fastest logic below
Which of the following is a secondary batery?
The residual Magnetism of a self excited generator will be
The type of Generator used in welding is
Two point starters are commonly used in
In a parallel plate capacitor the capacitance C is independant of
Find the decice(s) used in FM Modulation.
...does not offer reliable delivery mechanism
TCP uses the mechanism of
NRZ signaling used in
the range of voltmeter can be extended by using a
The personal computer industry was started by:
Masking the interrupts means
An assembler for a microprocessor is used for
In a radar system maximum unambiguous range depends on
Which one is a cross field tube
A high Q coil has
Quantization noise occurs in
Error detection at the data link level is achieved by
A crystal filter is equivalent to
The amplifier contributing maximum noise in a receiver is
LSI stands for
Dynamic RAMs are best for
Data bus is
The main advantage of dynamic RAM over Static RAM is
The purpose of ALU is to
In gray code, consecutive numbers changed by
Boolean logic is concerned with
Highest noise margin is offered by
BJT devices are useful when
How many interrupts are there in 8085 micro-processor
How many bits are needed to locate 128k memory locations?
EX-OR Gate can work as NOT Gate provided
diode is a
CMOS has ________ power consumption
a 64 bit word consist of ________ bytes
dynamic memory cells store a data bit in a
fan-out is specifies in terms of
00 represents a pixel they pixel is known as
Minimum NAND gates required for a FULL ADDER is
Rom programmed during manufacturing process itself is called as
A synchro-transmitter receiver unit is a
The input to a controller is
Mnemonic symbols are used
How many states of electrical switch?
what is the main function on relay?
The right hand rule to determine the direction of induced EMF
which principle states this Conductor is constant and the field is varing then EMF is will be induced ?
what does forefinger represent in left hand rule ?
Order of the lightning discharge current is
voltage regulation criterion in the design of
what is the value of electron (e)
In case of a resistor all of the following same except:
what is the reciprocal of resistance
which type of cable and name is used
how many bits in one nibble
which are the universal gates
Time delay relay in used in which relay type
to convert infix notation to postfix notation which data structure is needed
When voltage applied across an electric iron is halved, the power consumption of the iron will reduce to
If we consider two wires copper and aluminium of same length,which will have higher resistance
Drift velocity of electrons is
nand gate is combination of
frequency is
charge stores in:-
The essential condition for satisfactory parallel operation of two DC generators is that they should have same
The direction of rotation of a DC series motor can be reversed by
BJT is a
For the XOR gate, what is the output when both inputs are HIGH:
The ratio of secondary to primary turns is 4:5. If power input is P, what will be the ratio of power output (neglect all losses) to power input ?