Q1. Integration of PM modulation will result in
(A) FM
(B) PDM
(C) FDM
(D) AM
Answer: FM
Explanation:
Q2. Find out the fastest logic below
(A) TTL
(B) ECL
(C) DCL
(D) CMOS
Answer: ECL
Explanation:
Q3. Which of the following is a secondary batery?
(A) lead acid battery
(B) voltaic cell
(C) leclanche baterry
(D) all the above
Answer: lead acid battery
Explanation: A primary cell is a battery that is designed to be used once and discarded, and not recharged with electricity and reused like a secondary cell (rechargeable battery). In general, the electrochemical reaction occurring in the cell is not reversible, rendering the cell unrechargeable. As a primary cell is used, chemical reactions in the battery use up the chemicals that generate the power; when they are gone, the battery stops producing electricity and is useless. In contrast, in a secondary cell, the reaction can be reversed by running a current into the cell with a battery charger to recharge it, regenerating the chemical reactants. Primary cells are made in a range of standard sizes to power small household appliances.
Q4. The residual Magnetism of a self excited generator will be
(A) 2 v
(B) 10 v
(C) 2 to 10 v
(D) 0.2 v
Answer: 2 to 10 v
Explanation: Remanence or remanent magnetization or residual magnetism is the magnetization left behind in a ferromagnetic material (such as iron) after an external magnetic field is removed. It is also the measure of that magnetization.
Q5. The type of Generator used in welding is
(A) Differential compound
(B) Cumulative compound
(C) shunt type
(D) series type
Answer: Differential compound
Explanation:
Q6. Two point starters are commonly used in
(A) shunt motor
(B) series motor
(C) a and b
(D) compound motors
Answer: series motor
Explanation:
Q7. In a parallel plate capacitor the capacitance C is independant of
(A) Area of cross section
(B) Dielectric width
(C) charge
(D) permitivity
Answer: charge
Explanation:
Q8. Find the decice(s) used in FM Modulation.
(A) Varactor diode
(B) PLL
(C) reactance tube
(D) all the above
Answer: all the above
Explanation:
Q9. ...does not offer reliable delivery mechanism
(A) UDP
(B) TCP
(C) ARP
(D) FTP
Answer: UDP
Explanation:
Q10. TCP uses the mechanism of
(A) virtual connections
(B) physical connections
(C) virtual circuits
(D) circuit switching
Answer: virtual connections
Explanation:
Q11. NRZ signaling used in
(A) PAM
(B) ASK
(C) FOC
(D) PSK,FSK and PCM
Answer: PSK,FSK and PCM
Explanation:
Q12. the range of voltmeter can be extended by using a
(A) series resistance
(B) shunt resistance
(C) series-shunt resistance
(D) none of the above
Answer: series resistance
Explanation:
Q13. The personal computer industry was started by:
(A) apple
(B) HCL
(C) IBM
(D) Compaq
Answer: apple
Explanation:
Q14. Masking the interrupts means
(A) Disable power failure interrupts
(B) Disable all interrupts
(C) Disable i/o devices interrupts
(D) Disable some interrupts
Answer: Disable some interrupts
Explanation:
Q15. An assembler for a microprocessor is used for
(A) Creation of new programs using different modules
(B) Translation of a program from assembly language to machine language
(C) Translation of higher level language into English text
(D) Assembler of processors in a production line
Answer: Translation of a program from assembly language to machine language
Explanation:
Q16. In a radar system maximum unambiguous range depends on
(A) Pulse repetition frequency
(B) Maximum power of the transmitter
(C) Sensitivity of the radar receiver
(D) Width of the transmitted pulse
Answer: Pulse repetition frequency
Explanation:
Q17. Which one is a cross field tube
(A) Reflex klystron
(B) Klystron
(C) TWT
(D) Magnetron
Answer: Magnetron
Explanation:
Q18. A high Q coil has
(A) Low losses
(B) Large bandwidth
(C) Flat response
(D) High losses
Answer: Low losses
Explanation:
Q19. Quantization noise occurs in
(A) TDM
(B) PCM
(C) PWM
(D) FDM
Answer: PCM
Explanation:
Q20. Error detection at the data link level is achieved by
(A) Hamming codes
(B) Equalization
(C) Cyclic Redundancy codes
(D) Bit stuffing
Answer: Cyclic Redundancy codes
Explanation:
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