The radiator tubes are manufactured by using
If we know the engine speed, bore, stroke, number of cylinders and m.e.p in the cylinders, we can calculate
Knowing the IHP and FHP of an engine, we can calculate
Which one of the following is not a trade name of tractor in India
The ratio between the power output of an engine and the energy in the fuel burned to produce that power is called
The air volume in the cylinder with the piston at C divided by the clearance volume is called
The power used in overcoming friction in the engine is called
The average pressure during the power stroke minus the average pressure during the intake, compression and exhaust strokes is called
IHP minus FHP equals
Engine torque is highest at
BHP divided by IHP is
The percentage of the energy in the petrol burnt in the engine which is actually utilized in propelling the car is as little as
In the diesel engine, the compression ratio is as high as
The device for smoothing out the power impulses from the engine is called the
The amount of air fuel mixture taken in by the engine on the suction stroke is a measure of the engine’s
The size of an engine cylinder is referred to in terms of its
In an operating engine, the hottest part of the piston is the
In normal operation the part of the exhaust valve that gets the hottest is
The power developed inside the engine cylinder is called
The ratio of the cylinder volume at BDC and the clearance volume is called
As a rule when comparing the front and rear wheel cylinder pistons, it will be found that the pistons in the front wheel cylinders are
Twisting and untwisting of the crankshaft is called
The rotating effect of the connecting rod on the connecting rod bearing produces
In the engine there must be relative motion between the piston and the connecting rod
Two of the three connecting rod bearing loads that increase as engine speeds increase are
When different forces act at angles on connecting rod bearing, the combining of these forces produces a
The active material in a charged negative plate is
The tree general types of friction bearings are
Petrol and Gasoline is called a hydrocarbon because it consists essentially of
Almost all bearing used in automotive engines are
The brake shoes are curved to conform to the inner diameter of the
It is cheaper if we use gaskets of
With an increase in temperature the resistance of carbon is
When petrol burns completely, two of the compounds that are formed are
Due to heat of combustion, with increase in temperature the molecules
When air is heated, it
Changing position of an object against an opposing force is called
A liquid that boils at a relatively high temperature is said to have
The ease with which a liquid changes to a vapour is called its
The pump part that rotates and causes water circulation between the radiator and engine is called
The bearing having the least friction is the
Conformability of an engine bearing is
The most commonly used material for tyre tubes is
When the plates of battery cell are made larger in size, we get increased
When preparing electrolyte, it is important to remember that
Aluminium alloy pistons are preferred because
The material used for the piston of modern passenger cars are
Piston compression rings are manufactured by
Gudgeon pins or piston pins are made by
A flat surface can be produced by a lathe machine, if the cutting tool moves
What is the function of cone pulley drive in lathe machines?
Which of the following is a mechanism for mechanized movements of the carriage along longitudinal axis?
The function of taper turning process is to
The process of bevelling sharp ends of a workpiece is known as
In an isolated system, which one of the following can be transferred between the system and its surrounding.
Which of the following is an extensive property?
Correct expression for absolute pressure?
The extensive properties of a system
An isobaric process, has constant
Which of the following energy conversion devices convert heat into work?
Lancashire boilers are
Smoke tube boilers have large water to steam ratio, hence
In four stroke cycle engine, cycle is completed in
Which type of bearings are known as anti-friction bearings?
In roller bearings which type of rolling elements are used?
Why is the load carrying capacity low in ball bearings?
Cylindrical roller bearings have greater
Which of the following statements is/are true?
Which of the following statements is/are true for gear drives?
In which power transmitting drive polygon effect is observed?
What is meant by gear ratio?
Which gears are used to connect two intersecting shaft axes?
In stress-strain diagram, up to proportional limit
Deformation per unit length is called as
Which of the following materials do not have a well defined yield point?
Factor of safety is the ratio of
The degree of closeness of the measured value of a certain quantity with its true value is known as
Error of measurement =
The ability by which a measuring device can detect small differences in the quantity being measured by it, is called its
The following term(s) is (are) associated with measuring devices
To compare an unknown with a standard through a calibrated system is called
The following is an internationally recognized and accepted unit system
One yard = _____ inch
The following is a line standard of measurement
The Wringing is due to
The principle of Interchangeability is normally employed for
Following is the theoretical size which is common to both the parts of a mating pair
is equal to the differences of the two limits of size of the part
The amount by which the actual size of a shaft is less than the actual size of mating hole in an assembly
Which of the following is a power transmitting element?
Machine elements such as bearings are
The shaft directly connected to the power source is called as ______
Which of the following is a machine shaft?
Which of the following statements is/are true?
Which flat belt drive system has two pulleys mounted on driven shaft and one pulley on driving shaft?
Which of the following statements are false for belt drives?
Why is an idler gear used in gear trains?
The process of creating mechanisms and shapes of mechanical elements for a machine to get the desired output for a given input is called as
Which of the following is not a reason to design and redesign a product?
In design process, which process is followed after selecting the material?
Which design consideration deals with appearance of the product?
The objective of considering ergonomics in machine design is to
Hardness of a material enables it to resist
The component deforming progressively under load at high temperatures is called as
Which of the following ferrous alloys can be casted into intricate shapes?
Which of the following is not a property of copper alloy?
What is the percentage of carbon in plain carbon steel?
What are the minimum number of kinematic pairs required in a kinematic chain?
Beam engine mechanism is an example of
Which of the following inversions of four bar chain, convert oscillatory motion from one lever to another lever?
Which of the following is a not a surface finishing process?
Which of the following factors reduce strength of casted components?
In which of the following processes, material is neither added nor removed but is deformed into desired shape?
Which of the following component(s) is/are manufactured by powder metallurgy processes?
Which of the following statements is/are true for alloy steels?
Which of the following is a ferrous alloy?
Copper when alloyed with zinc is known as
The plastic materials which do not undergo chemical change when heated are
Which of the following is a characteristic of Polytetra-flouro-ethylene?
Which of the following statements is/are true for mechanisms?
Which body transmits force with negligible deformation?
What is the primary function of mechanism?
Which of the following is an inversion of four bar chain?
What are the number of sliding and turning pairs in a slider crank mechanism?
What is meant by drag in casting process?
Casting replica used to make the cavity is called as
The process of joining similar or dissimilar materials by heating them below 450o C using non-ferrous filler material is called as
At forging temperature when a compressive force is applied on the material, it deforms
What is the average temperature(in degree Celsius) required for hot forging of aluminium alloys?
Which process squeezes metals into peaks and troughs with plastic deformation?
Which of the following operations is/are performed on a lathe machine?
The process of chamfering the entrance of a drilled hole is known as
On drilling machine, which process is known as reaming?
The radiation pyrometers work on the principle of
According to Joules law, the internal energy of a perfect gas is the function of absolute
According to Kelvin-Planck statement, it is impossible to construct a device operating on a cycle which transfers heat from
Thermal efficiency of S.I. engines is low, due to
Pump transfers input mechanical energy of an engine, into
Which of the following protects penstock due to sudden variation of flow or velocity of water?
One ton of refrigeration is equal to
What is the function of a moderator?
In ideal machines
A cable with a uniformly distributed load per horizontal meter run will take the following shape
Cavitation is caused by
Cavitation will begin when
Principle of similitude forms the basis of
According to fan laws, at constant speed and capacity, the pressure and power vary
According to fan laws, at constant pressure, the speed capacity and power vary
According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary
Pressure intensifier increases the pressure in proportion to
A hydraulic accumulator normally consists of
A hydraulic intensifier normally consists of
Hydraulic accumulator is used for
Maximum impulse will be developed in hydraulic ram when
In the crankcase method of scavenging, the air pressure is produced by
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at
The shock absorbing capacity of a bolt can be increased by
Pessimistic time is
In PERT analysis, critical path is obtained by joining events having
In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be
Shear stress induced in a shaft subjected to tension will be
Angle of dwell of cam is defined as the angle
Angle of ascent of cam is defined as the angle
Shear stress in static fluid is
Which branch of fluid mechanics deals with translation, rotation and deformation of the fluid element without considering the force and energy causing such motion is called as
Inter molecular cohesive force in the fluids is
The specific weight of the fluid depends upon
Which property of the fluid offers resistance to deformation under the action of shear force?
In which method of describing fluid motion, the observer remains stationary and observes changes in the fluid parameters at a particular point only?
The rate of increase of velocity with respect to change in the position of fluid particle in a flow field is called as
The actual path followed by a fluid particle as it moves during a period of time, is called as
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at the point, is called as
The net force of an ideal flow is equal to the sum of nonzero values of
When the net force acting on a fluid is the sum of only gravity force, pressure force and viscous force, the equation is called as
In a steady, ideal flow of an incompressible fluid, total energy at any point of the fluid is always constant. This theorem is known as
the density of the fluid is low
Re = Reynold’s number
What is the ratio of maximum velocity to average velocity, when the fluid is passing through two parallel plates and flow is laminar?
The head loss through fluid flowing pipe due to friction is
Minor losses occur due to
Minor losses do not make any serious effect in
Fluid is a substance that
Fluid is a substance which offers no resistance to change of
Practical fluids
In a static fluid
A fluid is said to be ideal, if it is
An ideal flow of any fluid must fulfill the following
If no resistance is encountered by displacement, such a substance is known as
The volumetric change of the fluid caused by a resistance is known as
Liquids
Density of water is maximum at
The value of mass density in kgsecVm4 for water at 0°C is
Property of a fluid by which its own molecules are attracted is called
Mercury does not wet glass. This is due to property of liquid known as
The property of a fluid which enables it to resist tensile stress is known as
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called
The specific weight of water is 1000 kg/m”
When the flow parameters at any given instant remain same at every point, then flow is said to be
Which of the following is demensionless
The normal stress in a fluid will be constant in all directions at a point only if
The pressure at a point in a fluid will not be same in all the directions when the fluid is
The tendency of a liquid surface to contract is due to the following property
The surface tension of mercury at normal temperature compared to that of water is
A perfect gas
For very great pressures, viscosity of moss gases and liquids
A fluid in equilibrium can’t sustain
Viscosity of water in comparison to mercury is
The bulk modulus of elasticity with increase in pressure
The bulk modulus of elasticity
A balloon lifting in air follows the following principle
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to
The increase of temperature results in
Surface tension has the units of
Surface tension
The stress-strain relation of the newtoneon fluid is
The units of viscosity are
Kinematic viscosity is dependent upon
Units of surface tension are
Which of the following meters is not associated with viscosity
For manometer, a better liquid combination is one having
Choose the wrong statement. Alcohol is used in manometer, because
The property of fluid by virtue of which it offers resistance to shear is called
Choose the wrong statement
The density of water is 1000 kg/m3 at
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be
Choose the wrong statement
The units of kinematic viscosity are
The ratio of absolute viscosity to mass density is known as
Which of the following is the unit of kinematic viscosity
A one dimensional flow is one which
Alcohol is used in manometers because
Specific weight of sea water is more that of pure water because it contains
Free surface of a liquid tends to contract to the smallest possible area due to force of
A bucket of water is hanging from a spring balanc An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
Falling drops of water become spheres due to the property of
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as
The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to
The resultant upward pressure of the fluid on an immersed body is called
The conditions for the stable equilibrium of a floating body are
Poise is the unit of
Metacentric height is given as the distance between
The buoyancy depends on
The center of gravity of the volume of the liquid displaced by an immersed body is called
A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, what fraction of it volume is under mercury?
The angle of contact in case of a liquid depends upon
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
Rain drops are spherical because of
Surface energy per unit area of a surface is numerically equal to ..
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately
If the surface of liquid is convex, men
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than
To avoid an interruption in the flow of a syphon, an air vessel is provided
The vapour pressure over the concave surface is
The property by virtue of which a liquid opposes relative motion between its different layers is called
The process of diffusion of one liquid into the other through a semi-permeable membrane is called
The continuity equation is connected with
The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will
Liquids transmit pressure equally in all the directions. This is according to
Capillary action is due to the
The atmospheric pressure with rise in altitude decreases
Pressure of the order of 10″’ torr can be measured by
Operation of McLeod gauge used for low pressure measurement is based on the principle of
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of
In an isothermal atmosphere, the pressure
Mercury is often used in barometer because
Barometer is used to measure
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea
Which of the following instrument can be used for measuring speed of an aeroplane
Piezometer is used to measure
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem
The speed of sound in a ideal gas varies directly as its
Dynamic viscosity of most of the liquids with rise in temperature
Dynamic viscosity of most of the gases with rise in temperature
A metal with specific gravity of o floating in a fluid of same specific gravity a will
Euler’s dimensionless number relates the following
Which of the following manometer has highest sensitivity
Working principle of dead weight pressure gauge tester is based on
The resultant of all normal pressures acts
Metacentric height is the distance between the metacentre and
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called
The center of pressure of a surface subjected to fluid pressure is the point
Buoyant force is
The line of action of the buoyant force acts through the
Center of buoyancy is the
A body floats in stable equilibrium
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if
Metacentre is the point of intersection of
Choose the incorrect statement
For a body floating in a liquid the normal pressure exerted by the liquid acts at
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to
When a body floating in a liquid, is displaced slightly, it oscillates about
Buoyant force is
Ratio of inertia force to surface Jension is known as
A ship whose hull length is 100 m is to travel at 10 m/se For dynamic similarity, at what velocity should a 1:25 model be towed through water ?
Ratio of inertia force to elastic force is known as
For a floating body to be in stable equilibrium, its metacentre should be
For a floating body to be in equilibrium
The two important forces for a floating body are
Center of pressure on an inclined plane is
An open vessel of water is accelerated up an inclined plan The free water surface will
The line of action of the buoyant force acts through the centroid of the
Resultant pressure of the liquid in the case of an immersed body acts through
The centre of gravity of the volume of the liquid displaced by an immersed body is called
Differential monometer is used to measure
The time oscillation of a floating body with increase in metacentric height will be
In an immersed body, centre of pressure is
The normal stress is same in all directions at a point in a fluid
Select the correct statement
For measuring flow by a venturimeter, if should be installed in
Rotameter is a device used to measure
Flow of water in a pipe about 3 metres in diameter can be measured by
True one-dimensional flow occurs when
An ideal flow of any fluid must satisfy
In the case of steady flow of a fluid, the acceleration of any fluid particle is
During the opening of a valve in a pipe line, the flow is
Uniform flow occurs when
Gradually varied flow is
Steady flow occurs when
The flow which neglects changes in a transverse direction is known as
The flow in which each liquid particle has a definite path and their paths do not cross each other is called
The flow in which conditions do not change with time at any point, is known as
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as
The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as
Flow occurring in a pipeline when a valve is being opened is
General energy equation holds for
A streamline is defined as the line
Two dimensional flow occurs when
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?
The velocity of jet of water travelling out of opening in a tank filled with water is proportional to
In a free vortex motion, the radial component of velocity everywhere is
In a forced vortex, the velocity of flow everywhere within the fluid is
The region between the separation streamline and the boundary surface of the solid body is known as
For hypersonic flow, the Mach number is
Normal depth in open channel flow is the depth of flow corresponding to
Pitot tube is used for measurement of
Hydrometer is used to determine
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream
According to Bernoulli’s equation for steady ideal fluid flow
The equation of continuity holds good when the flow
Mach number is significant in
Froude number is significant in
All the terms of energy in Bernoulli’s equation have dimension of
The fluid forces considered in the Navier Stokes equation are
A large Roynold number is indication of
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than
Two pipe systems can be said to be equivalent, when the following quantites are same
For pipes, turbulent flow occurs when Reynolds number is
Bernoulli equation deals with the law of conservation of
Unit of thermal conductivity in M.K.S. units is
Unit of thermal conductivity in S.I. units is
Thermal conductivity of solid metals with rise in temperature normally
Thermal conductivity of non-metallic amorphous solids with decrease in temperature
Heat transfer takes place as per –
When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by
When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by
Sensible heat is the heat required to
The insulation ability of an insulator with the presence of moisture would
When heat is Transferred by molecular collision, it is referred to as heat transfer by
Heat transfer in liquid and gases takes place by
Which of the following is the case of heat transfer by radiation
Heat is closely related with
Pick up the wrong case. Heat flowing from one side to other depends directly on
Metals are good conductors of heat because
Which of the following is a case of steady state heat transfer
Total heat is the heat required to
Cork is a good insulator because it has
Thermal conductivity of water in general with rise in temperature
Thermal conductivity of water at 20°C is of the order of
Temperature of steam at around 540°C can be measured by
Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of
The time constant of a thermocouple is
Thermal conductivity of air with rise in temperature
Heat flows from one body to other when they have
The amount of heat flow through a body by conduction is
Which of the following has least value of conductivity
Which of the following is expected to have highest thermal conductivity
Thermal conductivity of glass-wool varies from sample to sample because of variation in
Thermal conductivity of a material may be defined as the
Which of the following has maximum value of thermal conductivity
Moisture would find its way into insulation by vapour pressure unless it is prevented by
Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in
According to Prevost theory of heat exchange
The ratio of heat flow Q1/Q2 from two walls of same thickness having their thermal conductivities as ATj – 2K2 will be
Heat transfer by radiation mainly depends upon
Thermal diffusivity is
Thermal conductivity of wood depends on
In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by
Film coefficient is defined as Inside diameter of tube
Heat conducted througfi unit area and unit thick face per unit time when temperature difference between opposite faces is unity,is called
The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as
Emissivity of a white polished body in comparison to a black body is
A grey body is one whose absorptivity
Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of
.A non-dimensional number generally associated with natural convection heat transfer is
LMTD in case of counter flow heat exchanger as compared-to parallel flow heat exchanger is
In heat exchangers, degree of approach is defined as the difference between temperatures of
In counter flow heat exchangers
A steam pipe is to be insulated by two insulating materials put over each other. For best results
Fourier’s law of heat conduction is valid for
According of Kirchhoff’s law,
All radiations in a black body are
According to Kirchoff’s law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
The concept of overall coefficient of heat transfer is used in case of heat transfer by
Joule sec is the unit of
The value of Prandtl number for air is about
The value of the wavelength for maximum emissive power is given by —
Log mean temperature difference in case of counter flow compared to parallel flow will be
The energy distribution of an ideal reflector at higher temperatures is largely in the range of
Total emissivity of polished silver compared to black body is
According to Stefan-Boltzmann law, ideal radiators emit radiant energy at a rate proportional to
Which of the following property of air does not increase with rise in temperature
In free con-vection heat transfer, Nusselt number is function of
Stefan Boltzmann law is applicable for heat transfer by
The thermal diffusivities for gases are generally
The thermal diffusivities for solids are generally
Thermal diffusivity of a substance is
The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
According to Wien’s law, the wavelength corresponding to maximum emission is proportional to
The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit
The ratio of the energy absorbed by the body to total energy falling on it is called
he amount of radiation mainly depends on
The emissive power of a body depends upon its
plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by
Absorptivity of a body will be equal to its emissivity
In regenerator type heat exchanger, heat transfer takes place by
A perfect black body is one which
Planck’s law holds good for
A grey body is one whose absorptivity
Reciprocating pumps are no more to be seen in industrial applications because of
In a centrifugal pump casing, the flow of water leaving the impeller, is
Head developed by a centrifugal pump depends on
For starting an axial flow pump, its delivery valve should be
The efficiency of a centrifugal pump is maximum when its blades are
In a centrifugal pump casing, the flow of water leaving the
Centrifugal pump is started with its delivery valve
Axial flow pump is started with its delivery valve
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be
One horsepower is equal to
Multistage centrifugal pumps are used to obtain
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by
The horse power required in above case will be
Low specific speed of a pump implies it is
The optimum value of vane exit angle for a centrifugal pump impeller is
In a centrifugal pump, the liquid enters the pump
For small discharge at high pressure, following pump is preferred
In centrifugal pumps, maximum efficiency is obtained when the blades are
Motion of a liquid in a volute casing of a centrifugal pump is an example of
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred
Medium specific speed of a pump implies it is
High specific speed of a pump implies it is
Indicator diagram of a reciprocating pump is a graph between
Low specific speed of turbine implies it is
Any change in load is adjusted by adjusting following parameter on turbine
Runaway speed of a hydraulic turbine is
The maximum number of jets generally employed in impulse turbine without jet interference is
Medium specific speea of turbine implies it is
High specific speed of turbine implies it is
The specific speed of turbine is defined as the speed of a unit
Casting of a centrifugal pump is designed so as to minimize
In reaction turbine, draft tube is used
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between
Francis turbine is best suited for
The flow rate in gear pump
Impulse turbine is generally fitted
Francis, Kaplan and propeller turbines fall under the category of
Reaction turbines are used for
The discharge through a reaction turbine with increase in unit speed
The angle of taper on draft tube is
Specific speed for reaction turbines ranges from
In axial flow fans and turbines, fluid enters and leaves as follows
Which place in hydraulic turbine is most susceptible for cavitation
Air vessels in reciprocating pump are used to
of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies
According to fan laws, for fans having constant wheel diameter, the pressure varies
According to fan laws, for the fans having constant wheel diameters, the power demand varies
The pressure at the end of compression in the case of diesel engine is of the order of
The maximum temperature in the I.C. engine cylinder is of the order of
The thermal efficiecny of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will
Pick up the wrong statement
Combustion in compression ignition engines is
The specific fuel consumption per BHP hour for diesel engine is approximately
The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed
Crankcase explosion in I.C. engines usually occurs as
Compression loss in I.C engines occurs due to
The specific fuel consumption per BH hour for a petrol engine is approximately
The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is
The inlet value of a four stroke cycle I.C engine remains open for nearly
Which of the following is not an interns combustion engine
Pick up the false statement
If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the
The output of a diesel engine can be increased without increasing the engine revolution or size in following way
It the temperature of intake air in IC engines is lowered, then its efficiency will
In a typical medium speed 4-stroke cycle diesel engine
For the same compression ratio
The process of breaking up or a lipuid into fine droplets by spraying is called
As a result of detonation in an I.C. engine, following parameter attains very high value
Which of the following statements is correct?
Most high speed compression engines operate on
The accumulation of carbon in a cylinder results in increase of
Which of the following medium is compressed in a Diesel engine cylinder
The air-fuel ratio of the petrol engine is controlled by
In a typical medium speed, 4-stroke cycle diesel engine
Diesel fuel, compared to petrol is
diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of
When crude oil is heated, then which of the following hydrocarbon is given off first.
The rating of a diesel engine, with increase in air intlet temperature, will
A 75 cc engine has following parameter as 75 cc
A heat engine utilises the
Gaseous-fuel guarantees are based on
Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads
Polymerisation is a chemical process in which molecules of a compound become
The term scavenging is generally associated with
In diesel engine, the compression ratio in comparison to expansion ratio is
The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at
Engine pistons ‘are usually made of aluminium alloy because it
Most high speed compression engines operate on
The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is
A diesel engine as compared to petrol engine (both running at rated load) is
The size of inlet valve of.an engine in comparison to exhaust valve is
In a cycle, the spark lasts roughly for
Which of the following is false statement :Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following
of the following is false statement. Some of the methods used to reduce diesel smoke are as follows
The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be
Pick up the wrong statement about supercharging
The actual volume of fresh charge admitted in 4-stroke petrol engine is
The magneto in an automobile is basically
The reason for supercharging in any engine is to
The operation of forcing additional air under pressure in the engine cylinder is known as
Supercharging is essential in
The minimum cranking speed in case of petrol engine is about
Flash point of fuel oil is
The mean effective pressure obtained from engine indicator indicates the
the same power developed in I.C. engines, the cheaper system is
Installation of supercharger on a four-cycle diesel engine can result in the following percentage increase in power
Scavenging is usually done to increase
Which of the following is the lightest and most volatile liquid fuel
The theoretically correct air fuel ratio for petrol engine is of the order of
Air fuel ratio for idling speed of a petrol engine is approximately
Air fuel ratio at which a petrol engine can not work is
For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of
Pour point of fuel oil is the
Diesel engine can work on very lean air fuel ratio of the order of 30 : 1. A petrol engine can also work on such a lean ratio provided
The knock in diesel engine occurs due to
Volatility of diesel fuel oil is
Which is more viscous lubricant oil
In the opposed piston diesel engine, the combustion chamber is located
A stoichiometric air-fuel ratio is
In a naturally aspirated diesel engine, the air is supplied by
In loop scavenging, the top of the piston is
The ultimate strength of steel in tension in comparison to shear is in the ratio of
The permissible stress for carbon steel under static loading is generally taken as
The property of a material which enables it to resist fracture due to high impact loads is known as
A hot short metal is
Guest’s theory of failure is applicable for following type of materials
Rankine’s theory of failure is applicable for following type of materials
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test
Resilience of a material is important, when it is subjected to
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by
Other method of reducing shock load in the above case can be
If a load W is applied instantaneously on a bar; then the stress induced in bar will
Brittle coating technique is used for
Stress concentration is caused due to
The endurance limit of a material with finished surface in comparison to rough surface is
Plastic flow in ductile materials
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be
The fatigue life of a part can be improved by
Stress concentration in static loading is more serious in
Stress concentration in cyclic loading is more serious in
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to
Pick up wrong statement. Fatigue strength can be increased by
Which of the following is not correct procedure to increase the fatigue limit
Coaxing is the procedure of increasing
Which is correct statement ? Stress concentration in static loading is
 In Vicker’s hardness testing, the pyramid indentor apex is
Which is correct statement ? Stress concentration in cyclic loading is
In testing a material for endurance strength, it is subjected to
If a material fails below its yield point, failure would be due to
The fatigue limit of a material
Cold working
Yield point in fatigue loading as compared to static loading is
Residual stress in materials
building up of worn and uridersized parts, subjected to repeated loads by electroplating is
In nitrated parts, the origins of the fatigue cracks will occur at
Which process will increase the fatigue duration of parts ?
Which is correct statement ?
Resistance to fatigue of a material is measured by
In most machine members, the damping capacity of the material should be
The ratio of endurance limit in shear to the endurance limit in flexure is
For steel, the ultimate strength in shear as compared to ultimate strength in tension is
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of
At low temperatures (say 75°C) the notched-bar impact value of steel
The crest diameter of a screw thread is same as
Maximum principal stress theory is applicable for
The following type of nut is used with alien bolt
A stud
Shear stress theory is applicable for
For applications involving high stresses in one direction only the following type of thread would be best suited
The included angle in unified of American National threads is
The function of a washer is to
Cap screws are
An alien bolt is
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be
Ball bearing type screws are found in following application
Set screws are
A self locking screw has
Machine screws are
Rivets are generally specified by
The edges of a boiler plate are bevelled to an angle of
Which of the following is a permanent fastening ?
In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to
(If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to
Transverse fillet welded joints are designed for
Jam nut is a locking device in which
The pitch of threads on a Jock nut in comparison to pitch of nut is
Buttress threads are usually found on
In order to obtain bolt of uniform strength
A key capable of tilting in a recess milled out in a shaft is known as
A key made from a cylindrical disc having segmental cross-section, is known as
A tapered key which fits in a keyway in the hub and is flat on the shaft, is known as
Fibrous fracture occurs in
Turn buckle has
Eye bolts are used for
Elastic nut is a locking device in which
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation
If threads on a bolt are left hand, threads on nut will be
Taper usually provided on cotter is
Applications in which stresses are encountered in one direction only uses following type of threads
The draw of cotter need not exceed
A bench vice has following type of threads
The valve rod in a steam engine is connected to an eccentric rod by
Split nut is a locking device in which
Taper on the cotter and slot is provided
The function of cutting oil when threading a pipe is to
Silver-based solder is used for
For tight leakage joints, following type of thread is best suited
In order to permit the thermal expansion/contraction of tubing, it should be
A tube has the following advantage over pipe
The strap end of a connecting rod of steam engine is joined by
A backing ring is used inside the pipe joint when making a
The shear plane in case of bolts should
Castle nut is a locking device in which
When a nut is tightened by plaping a washer below it, the bolt will be subjected to following type of loads
Gear box is used
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for
The piston rod of a steam engine is usually connected to the crosshead by means of
Which of the following pipe joints would be suitable for pipes carrying steam
Spring index is
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is
Form coefficient of spring is
Spring stiffness is
When two springs are in series (having stiffness K), the equivalent stiffness will be
When a close coiled helical spring is compressed, its wire is subjected to
If a spring is cut down into two springs, the stiffness of cut springs will be
Belt slip may occur due to
Aircraft body is usually fabricated by
If two springs are in parallel then their overall stiffness will be
In hydrodynamic bearings
Antifriction bearings are
 If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is
hydrostatic bearings
Oil in journal bearing should be applied at the point where load is
The rated life of a bearing varies
In V-belt drive, belt touches
Three different weights fall from a certain height under vacuum. They will take
In cross or regular lay ropes
In standard taper roller bearings, the angle of taper of outer raceway is
In composite or reverse laid ropes
Whether any core is required in wire ropes
If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to
Basic shaft is one
Basic hole is one
I.S. specifies following total number of grades of tolerances
For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately
Allen bolts are
The resultant axial load on a bolt depends on
The connecting rod bolts are tightened up so that tightening stress
The connecting rod bolts are tightened up with initial tension greater than the external load so that
If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited
Ductility of a material can be defined as the ability to
Malleability of a material is the ability to
In compression, a prism of brittle material will break
The ability of a material to resist softening at high temperature is known as
Mild steel belongs to the following category
The ultimate tensile strength of low carbon steel by working at a high strain rate will
Slow plastic defomiation of metals under a constant stress is known as
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00°C will
The number of electrons in 1 cm3 of metal would be of the order of
Stress relaxation is- the phenomenon
The elastic stress strain behaviour of rubber is
Isotropic materials are those which have the same
Recrystallization temperature is one
Points of arrest for iron correspond to
Delta iron occurs at temperature of
A material is known as allotropic or polymorphic if it
Super conduction by metals is observed in the temperature range of
Which of the following constituents of steels is softest and least strong
Which of the following represents the allotropic forms of iron
The following types of materials are usually the most ductile
Pure iron is the structure of
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is
Gamma iron exits at following temperature
Ferromagnetic alpha iron exists in temperature range of
Paramagnetic alpha iron changes to gamma iron at
A reversible change in the atomic structure of steel with corresponding change in the properties is known as
The molecules in a solid move
The crystal structure of gamma iron is
The crystal of alpha iron is
The metallic structure of mild steel is
For the allotropic forms of iron, the points of arrest are
The percentage of carbon in pig iron varies from
The percentage of carbon in grey iron castings usually varies between
Pig iron is the name given to
The unique property of cast iron is its high
Cast iron is characterised by minimum of following percentage of carbon
In grey cast iron, carbon is present in the form of
In nodular iron, graphite is in the form of
In malleable iron, carbon is present in the form of
Wrought iron is
Sulphur in pig iron tends to make it
Pick up wrong statement about wrought iron
Iron is ----- type of material
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
Chilled cast iron has
Cast iron has
White cast iron contains carbon in the form of
In mottled cast iron, carbon is available in
An important property of high silicon (12 – 18%) cast iron is the high
An important property of malleable cast iron in comparison to grey cast iron is the high
Steel contains
Carbon steel is
Annealing of white cast iron results in production of
Hardness of steel depends on
Maximum percentage of carbon in ferrite is
Maximum percentage of carbon in austenite is
Corrosion resistance of steel is increased by addition of
In which of the following cases, consideration of creep is important
The most effective inhibitor of grain growth, when added in small quantities is
Depth of hardness of steel is increased by addition of
Railway rails are normally made of
Select the incorrect statement
Select the incorrect statement Nickel and chromium in steel help in
Machining properties of steel are improved by adding
Eutectoid steel contains following percentage of carbon
The basic constituents of Hastelloy are
Basic constituents of Monel metal are
German silver is an alloy of
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
A cold chisel is made of
An engineer’s hammer is made of
Inconel is an alloy of
By severely deforming a metal in a particular direction it becomes
Solder is an alloy consisting of
Cyaniding is the process of
Induction hardening is the process of
The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as
Process of austempering results in
Weld decay is the phenomenon found with
Materials after cold working are subjected to following process to relieve stresses
Hardness of upper bainite (acicular structure) is about
Carbon in iron is an example of
Brass is an example of
Which is false statement about annealing. Annealing is done to
Argentite is the principal ore or raw material for
Hardness of lower bainite (tempered martensite) is about
Which is false statement about normalizing. Normalizing is done to
Vanadium in high speed steels
Amorphous material is one
Dislocations in materials refer to the following type of defect
An example of amorphous material is
Which is false statement about tempering? Tempering is done to
Which is false statement about case hardening. Case hardening is done by
Which of the following is the binding material in cemented carbides
Chromium in steel
Manganese in steel increases its
Cemented carbide tools are not found to be suitable for cutting
Sulphur in steel
Tungsten in steel
Tungsten in high speed steel provides
Which of the following is not the correct method of increasing fatigue limit
Connecting rod is usually made of
Which of the following pipes is least corrosion resistant
Tensile strength of steel can be safely in-creased by
High carbon steel carries carbon %age c
Cobalt in steel
The percentage of carbon in low carbon steel is
The hardness of steel increases if it contains
Nodular iron has
Nickel in steel
Which of the following elements does not impart hardness to steel
The presence of sulphur in pig iron makes
Melting point of iron is
Compressive strength of grey cast iron in tonnes/cm is of the order of
Blast furnace produces following by reduction of iron ore
Cupola produces following material
The machinability of steel is increased by
The following element can’t impart high strength at elevated temperature
Which of the following element results in presence of free graphite in C.I.
White cast iron
Cold rolled steel sheets contain carbon of the following order
Pipes for bicycle frames are made of
Large forgings, crank shafts, axles normally contain carbon up to
Heavy duty leaf and coil spring* contain carbon of the following order
Taps, dies and drills contain carbon
Drop forging dies contain carbon of the order of
Which is the false statement about wrought iron. It has
The tensile strength of wrought iron is maximum
Balls for ball bearings are made of
Malleable cast iron
Preheating is essential in welding
The hardness of steel primarily depends on
Steel made from phosphatic iron is
Ductile cast iron
Brass contains
The crystal structure of brass is
The composition of silver solder is
Which one of the following metals would work-harden more quickly than the others?
A specimen of aluminium metal when observed under microscope shows
The usual composition of a soldering alloy is
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
Corrosion resistance of steel is increased by adding
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
If a refractory contains high content of silicon, it means refractory is
Bell metal contains
Which of the following is used for bearing liner
The correct sequence for descending order of machinability is
Structural steel contains following principal alloying elements
Aluminium bronze contains aluminium and copper in the ratio of
Bronze contains
Muntz metal contains copper and zinc in the ratio of
Gun metal contains
Perminvar alloy having constant permeability is an alloy of
The alloy used for making electrical resistances and heating elements is
Monel metal contains
Permalloy is a
Free cutting steels
Delta metal is an alloy of
Admiralty gun metal contains
Which of the following alloys does not contain tin
Which is false statement about properties of aluminium
Addition of copper to aluminium results in
Addition of manganese to aluminium results in
Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element
Which of the following alloys does not have copper as one of the constituents
Addition of lead and bismuth to aluminium results in
Addition of silicon to aluminium results in
Constantant, an alloy used in thermocouples is an alloy of
White metal contains
German silver contains
Which of the following has highest specific strength of all structural materials
Dow metal contains
Foundry crucible is made of
Age-hardening is related with
Aluminium bronze contains
The correct composition of Babbit metal is
DuraJomin contains
Neutral solution is one which has pH value
Acidic solution is one which has pH value
Basic solution is one which has pH value
Following elements have face-centred cubic structure
Recrystallisation temperature can belowered by
Pearlite is a combination of
Austenite rs a combination of
The unit of force in S.I. units is
The unit of work or energy in S.I. units is
Forces are called concurrent when their lines of action meet in
Forces are called coplanar when all of them acting on body lie in
A force acting on a body may
Which is the correct statement about law of polygon of forces ?
Effect of a force on a body depends upon
If a number of forces act simultaneously on a particle, it is possible
A force is completely defined when we specify
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of
The resolved part of the resultant of two forces inclined at an angle 9 in a given direction is equal to
Which of the following do not have identical dimensions ?
Which of the following is not the unit of distance ?
Which of the following is the unit of power ?
 Which of the following is not the unit of work, energy and heat ?
Which of the following is not the unit of pressure ?
The weight of a body is due to
The forces, which meet at one point, but their lines of action do not lie in a plane, are called
When trying to turn a key into a lock, following is applied
 Which of the following is not a scalar quantity
According to principle of transmissibility of forces, the effect of a force upon a body is
Which of the following is a vector quantity
A number of forces acting at a point will be in equilibrium if
Two non-collinear parallel equal forces acting in opposite direction
According to principle of moments
Which of the following is not a vector quantity
According to law of triangle of forces
If a rigid body is in equilibrium under the action of three forces, then
D Alemberts principle is used for
A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if
According to Lami’s theorem
Two coplanar couples having equal and opposite moments
The product of either force of couple with the arm of the couple is called
The center of gravity of a uniform lamina lies at
Center of gravity of a solid cone lies on the axis at the height
Center of percussion is
Center of gravity of a thin hollow cone lies on the axis at a height of
The center of percussion of the homogeneous rod of length L suspended at the top will be
The center of gravity of a triangle lies at the point of
The possible loading in various members of framed structures are
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve
A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate
Pick up the incorrect statement from the following :
The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be
In the equation of virtual work, following force is neglected
If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be
The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, - ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be
Angle of friction is the
The coefficient of friction depends on
Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction
The ratio of limiting friction and normal reaction is known as
Which one of the following statements is not correct
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be
Frictional force encountered after commencement of motion is called
Coefficient of friction is the
Select the incorrect statement about friction force for dry surfaces. Friction force is
If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella
A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is
Limiting force of friction is the
Coulomb friction is the friction between
Dynamic friction as compared to static friction is
Tangent of angle of friction is equal to
Kinetic friction is the
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is \i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
The algebraic sum of moments of the forces forming couple about any point in their plane is
A single force and a couple acting in the same plane upon a rigid body
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either
The maximum frictional force which comes into play when a body just begins to slide over another surface is called
The co-efficient of friction depends upon
The necessary condition for forces to be in equilibrium is that these should be
If three forces acting in different planes can be represented by a triangle, these will be in
flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to
Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal
The C.G. of a solid hemisphere lies on the central radius 3r
The C.G. of a plane lamina will not be at its geometrical centre in the case of a
The C.G. of a right circular solid cone of height h lies at the following distance from the base
The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is
Which of the following is the example of lever of first order
A pair of smith’s tongs is an example of the lever of
In the lever of third order, load W, effort P and fulcrum F are oriented as follows
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of
In actual machines
A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
The high cutting speed and large rake angle of the tool will result in the formation of
The facing is an operation of
Fixtures are used
In a shaper, the length of stroke is increased by
The hole to be drilled for tapping is _________ the outside diameter of the thread on the tap.
The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called
The lip angle of a single point tool is usually
Ceramic cutting tools are
The point angle of a drill, for drilling stainless steel, is
In metal machining, the work-tool contact zone is a zone where heat is generated due to
Which of the following operation is first performed?
The parameter which completely defines the chip formation in a metal cutting process is
The cutting speed of a drill depends upon the
The addition of lead, sulphur and phosphorus to low carbon steels, help to
Work study is concerned with
Basic tool in work study is
What does symbol ‘O’ imply in work study
What does symbol ‘D’ imply in work study
What does symbol ‘V’ employ in work study
Material handling in automobile industry is done by
String diagram is used when
Work study is most useful
Micromotion study is
The allowed time for a job equals standard time plus
Micromotion study involves following number of fundamental hand motions
The standard time for a job is
Work study is done with the help of
Scheduling gives information about
Expediting function consists in keeping a watch on
Choose the wrong statement Time study is used to
Job evaluation is the method-of determining the
Micro-motion study is
Per cent idle time for men or machines is found by
TMU in method time measurement stands for
Time study is
Work sampling observations are taken on the basis of
One time measurement unit (TMU) in method time measurement system equals
Basic motion time study gives times for basic motions in ten thousandths of
Choose the wrong statement. Motion study is used for
Gnatt chart provides information about the
ABC analysis deals with
Process layout is employed for
For a product layout the material handling equipment must
Travel charts provide
Product layout is employed for
The most important objective behind plant layout is
The process layout is best suited where
A low unit cost can be obtained by following
Military organisation is known as
The main disadvantage of line organisation is
The main advantage of line organisation is its
Frederick W. Taylor introduced a system of working known as
The salient feature of functional organisation is
The most popular type of organisation used for Civil Engineering Constructions is
Templates are used for
In steel plant the most important system for materials handling is
Routing prescribes the
Queuing theory deals with problems of
Standard time is defined as
Father of industrial engineering is
The grouping of activities into organisational units is called
Which of the following organisation is preferred in automobile industry
Which of the following organisations is best suited for steel plants
The wastage of material in the store is taken into account by the following method in the evaluation of the material issued from the store
Which of the following is independent of sales forecast
Gnatt charts are used for
Inventory management consists of
Gnatt charts provide information about
Inventory control in production, planning and control aims at
In inventory control, the economic order quantity is the
Statistical quality control techniques are based on the theory of
The appellate authority for an industrial dispute is
Under the Apprenticeship Act
Standing orders which are statutory are applicable to
Acceptance sampling is widely used in
The technique of value analysis can be applied to
The term ‘value’ in value engineering refers to
Value engineering aims at finding out the
In the perpetual inventory control, the material is checked when it reaches its
Merit Rating is the method of determining worth of
Material handling and plant location is analysed by
Works cost implies
Motion study involves analysis of
Standard time as compared to normal time is
Select the incorrect statement about advantages of work sampling
In which of the following layouts, the lines need to the balanced
Which of the following layouts is suited for mass production
Which of the following layouts is suited to job production
The employees provident fund act is applicable to
The amount deducted from the salary of workers towards employees provident fund is
The deductions for, employees provident fund start
Tick the odd man out
Current assets include
The objective of time study is to determine the time required to complete a job by
Job enrichment technique is applied to
For ship vessel industry the following layout is best suited
In Halsey 50-50 plan, output standards are established
Routing is essential in the following type of industry
An optimum project schedule implies
Graphical method, simplex method, and transportation method are concerned with
Which one of the following represents a group incentive plan ?
In the Halsey 50-50 plan, the following are rewarded more
In the Halsey system of wage incentive plan, a worker is
Value for value engineering and analysis purposes is defined as
Break-even analysis can be used for
CPM has following time estimate
PERT has following time estimate
In Lincoln plan (one type of group incentive plan), the amount of the profit which an employee receives in addition to the guaranteed basic pay/wages, is based on :
Which of the following is not wage incentive plan
Which of the following plans motivates supervisors by paying a premium on time saved by workers
The time required to complete a task is established and a bonus is paid to the worker for every hour he saves from the established time required. This type of incentive plan is known as
One of the basic essentials of an incentive plan is that
In the Emerson efficiency plan, a worker receives only his daily wage and no bonus is paid till his efficiency reaches
If a worker gets a daily wage of Rs HA, then according to Rowan plan, his maximum daily earnings can be
In A-B-C control policy, maximum attention is given to
Which one of the following represents a group incentive plan ?
The mathematical technique for finding the best use of limited resources in an optimum manner is known as
In order that linear programming techniques provide valid results
The linear programming techniques can be applied successfully to industries like
The simplex method is the basic method for
The two-bin system is concerned with
The time required to complete a job is established and a bonus is paid to the worker based on the exact percentage of time saved. This type of incentive plan is known as
Replacement studies are made on the fol-lowing basis:
String diagram is used
Which of the following depreciation system ensures that the interest be charged on the cost of machine asset every year on the book value, but the rate of depreciation every year remains constant
Bin card is used in
Slack represents the difference between the
PERT and CPM are
A big advantage of PERT over Gantt charts is that in the former case
CPM is the
PMTP (predetermined motion time systems) include
Work study comprises following main techniques
Which of the following equations is not in conformity with others
PERT is the
The basic difference between PERT and CPM is that
Queuing theory is used for
In queuing theory, the nature of the waiting situation can be studied and analysed mathematically if
Queuing theory is associated with
The reasons which are basically responsible for the formation of a queue should be that
Monte Carlo solutions in queuing theory are extremely useful in queuing problems
In perpetual inventory control, the material is checked as it reaches its
A milestone chart
Bar charts are suitable for
The first method invented for planning projects was
Select the correct statement from the following
Select the correct statement from the following
Select the correct step used for scheduling a project by C.P.M.
The time of completing a project in network analysis is given by following time of the critical activity meeting at the finalitiode
The disadvantage of product layout is
Emergency rush order can be pushed more effectively in
Routing assists engineers in deciding in advance
The performance of a specific task in CPM is known as
Select the incorrect statement from the following
The artificial activity; which indicates that an activity following it cannot be started unless, the preceding activity is complete, is known as
A dummy activity
The difference between the time available to do the job and the time required to do the job, is known as
The probability distribution of activity times in PERT follows following distribution
The probability distribution of project completion in PERT follows following distribution
If TL is the largest allowable event occurrence time, total activity slack (s) is equal to
The critical activity has
The time by which the activity completion time can be delayed without affecting the start of succeeding activities, is Known as
The critical path of a network represents
Select the correct statement from the following
Critical path moves along the activities having total float of
Critical Path Net Work helps an engineer
Select the correct statement about relationship between various floats
The time which results in the least possible direct cost of an activity is known as
The technique for establishing and maintaining priorities among the various jobs of any project is known as
PERT is
CPMis
A CPM family includes
PERT/CPM, techniques can be used for following applications
PERT analysis is based on
Discrepancies of bar chart techniques are
O on a PERT/CPM chart represents
Select the correct statement. Dummy activity on a PERT/CPM chart means, it
Critical path on PERT/CPM chart is obtained by joining the events having
Slack of various events on the critical path in PERT/CPM chart
The assumption in PERT is
Activity s,lack or float of any event on a PERT/CPM chart is represented by
The important file in making a PERT is
An event is indicated on the network by
In a PERT chart
Positive slack on a PERT indicates that project is
For water, at pressures below atmospheric,
At very low temperature, the melting and boiling temperatures become equal. This temperature is
The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is
The saturation temperature of steam with increase in pressure increases
Carbonisation of coal is the process of
pulverising coal in inert atmosphere
If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by
The specific heat of superheated steam in kcal/kg is generally of the order of
On Mollier chart, flow through turbine is represented by ‘
A wet vapour can be completely specified by
On Millier chart, the constant pressure lines
On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by
The bituminous coal is non-caking if its carbon content is
The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become
Water at pressure of 4 kg/cm2 and 160°C temperature when exposed to atmosphere will
The dry saturated steam at very high pressure (150-200 kg/cm2) when throttled to atmosphere will become
In a throttling process
a throttling process
Latent heat of dry steam at atmospneric pressure is equal to
The latent heat of steam with increase of pressure
At which pressure the properties of water and steam become identical
In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is
While steam expands in turbines, theoretically the entropy
Heating wet steam at constant temperature is heating it at constant
Adiabatic process is
The state of vapour under saturation condition is described by
Pick up the wrong statement about critical condition of steam
Water boils when its vapour pressure
Equivalent evaporation of water is the evaporation “for a feed water supply at 100°C
The evaporation of 15.653 kg of water per hour from and at 100°C is called
The increase in pressure
During polytropic process
Hygrometery deals with the
Orsat meter is used for
An ideal regenerative cycle is
Efficiency of rankine cycle can be increased by
Cochran boiler is a
Lancashire boiler is a
Efficiency of a thermal cycle increases by
One kilowatt-hour energy is equivalent to
Which of the following gases has the highest calorific value
100% efficiency of a thermal cycle cannot be achieved because of
For burning 1 kg of carbon to CO as per chemically correct combusiton, amount of air required is
The diameter of Cornish boiler is of the order of
The lenght of Cornish boiler is of the order of
The diameter of fire tube of Cornish boiler compared to its shell is
Steam engine operates on
The change in internal energy in steam engines equals to
Water tube boilers are those in which
Locomotive type’ boiler is
Fire tube boilers are those in which
Which of the following substance will have same percentage in both proximate and ultimate analysis
The number of flue tubes in Lancashire boiler is
Which of the following is a fire tube boiler
Which of the following is a water tube boiler
The diameter of cylindrical shell of the Lancashire boiler is of the order of
A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are
The biggest size of thermal power unit operating in India is
Which of the following coals has the highest calorific value
The crown of the fire box is made hemispherical in order to
The fire tubes in, a Coarran and Scotish marine boiler are
The diameter of internal flue tubes in a Lancashire boiler compared to its shell is
The basic purpose of drum in boiler is to
Duplex feed pumps are used in small steam boilers. These operate on the principle of
The best suited coal for chain or travelling grate stoker boiler is
In natural circulation type boiler,
Hard coke is produced by carborisation of coal at
Hard coke is used in
Pick up the correct statement as regards Cornish boiler and Lancashire boiler
Locomotive boiler is of the following type
The shell diameter and length of locomotive boiler are
The diameters of fire tubes and superheaer tubes in locomotive boiler are
The water tubes in a babcock and wilcox boiler are
Which of the following varieties of coals is mostly used in steam boilers
The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is
The function of injector used in small steam plants is to
Which of the following boilers is best suited to meet fluctuating demands
Pick up the wrong statement about water tube boiler in comparison to fire tube boilers
The number of drums in Benson steam generator is
A fusible plug is fitted in small boilers in order to
The fusible plug in small boilers is located
Fusible plug for boilers is made of fusible metal containing tin, lead, and
Boiler H.P. is defined as the
In forced recirculation type boiler,
The ratio of heat utilised to produce steam and the heat liberated in furnace is known as
Steam in water tube boiler as compared to fire tube boiler
Thermal efficiency of well maintained boiler will be of the order
Thermal efficiency of a thermal power plant is of the order of
It is required to produce large amount of steam at low pressure. Which boiler should be used ?
Which type of boiler can meet rapid changes of load
In forced circulation type boiler
Boiler stays are used to
The radius of a dished head is taken approximately as
Size of boiler tubes is specified by
The heat loss in a boiler takes place in the form of
The major axis of elliptical manholes on the shell should be provided
In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine
With increase in load, radiant superheater has
With increase in load, convection superheater has
The diameter of fire tubes in Cochran boiler is of the order of
In a recuperative air preheater, the heat is transferred
A safety valve in a locomotive starts leaking. The leaking medium will be
The temperature of flue gases at air heater outlet should be
In regenerative air preheater, the heat is transferred
In designing air preheater, the important design consideration is that
The pressure of reheat steam after passing through reheater compared to inlet condition is
The function of injector used in small capacity boilers is to
The safety valve at super heater as compared to drum safety valve setting is set at
The height of chimney in a power plant is governed by
Steam exhaust from high pressure turbine is reheated in
Vacuum for reciprocating steam engines compared to steam turbines is
Expanding steam to a very low prseeure (high vacuum) in steam engines is
In locomotives, the draught is produced by
Reheating of steam under ideal conditions takes place at constant
The maximum discharge through a chimney occurs when the height of chimney is
Proximate analysis of fuel is determination of percentage of
Which device is used in thermal power plants to reduce level of pollution
Bomb calorimeter is used to determine
Ultimate analysis of fuel is determination of percentage of
For combustion of a fuel, following is essential
Spontaneous combustion is a phenomenon in which
The economiser is used in boilers to
An economiser in a boiler
Primary air is the air used to
Sulphur content of fuels is very important to the plant operators because it
Presence of moisture in fuel oil would
Gusset stays in a boiler are provided to
Water and sediment in fuel oil can be removed by
Pour point of fuel oil is the
Secondary air is the used to
The behaviour of coal in a furnace is determained by
Pick up wrong statement about desired properties of a good fuel
Sulphur in coal results in
Caking coals are those which
Green coal, in order to be burnt, must be
Tertiary air is the air used to
The safety valve on boiler drum compared to safety valve on superheater is set at
Which is not correct statement about pulverised fuel firing
The three “T” for good combustion are
Which is not correct statement about the function of furnace
Which is not correct statement about effect of sulphur in fuel
Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of
Incomplete combustion can be best judged by
The capacity of induced draft fan compared to forced draft fan in a boiler is
Pulverised fuel is used for
Calorific value of coal is of the order of
Evaporative capacity of boiler is expressed as
Boiler parameters are expressed by
The condition of steam in boiler drum is always
The balanced draft furnace is one using
Maximum energy loss in a boiler occurs due to
Over fire burning is the phenomenon of
Which is not the correct statement about moisture in coal
Deaeration of feed water is carried out because it reduces
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler
The steam temperature with increase in load in case of a boiler fitted with radiation super heater
During storage, the heating value of coal
The relative heat absorption for successively added equal areas of boiler convection heating surfaces
Film boiling occurs at
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
In water wall furnace, the heat is transferred to the water-walls by
The feed check valve is used in order to
The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase
Feed water conditioning in thermal power plants in done to
The basic job of feed water treatment in boilers is to overcome the problem of
Strain is defined as the ratio of
Hooke’s law holds good up to
Young’s modulus is defined as the ratio of
Deformation per unit length in the direction of force is known as
It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called
The materials having same elastic properties in all directions are called
A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under
Modulus of rigidity is defined as the ratio of
If the radius of wire stretched by a load is doubled, then its Young’s modulus will be
The ultimate tensile stress of mild steel compared to ultimate compressive stress is
Tensile strength of a material is obtained by dividing the maximum load during the test by the
The impact strength of a material is an index of its
The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length
Percentage reduction of area in performing tensile test on cast iron may be of the order of
The intensity of stress which causes unit strain is called
For steel, the ultimate strength in shear as compared to in tension is nearly
Which of the following has no unit
Which is the false statement about true stress-strain method
In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is
If a part is constrained to move and heated, it will develop
Which of the following materials is most elastic
The value of Poisson’s ratio for steel is between
The buckling load for a given material depends on
The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight
The property of a material by virtue of which a body returns to its original, shape after removal of the load is called
materials which exhibit the same elastic properties in all directions are called
The value of Poisson’s ratio for cast iron is
The property of a material which allows it to be drawn into a smaller section is called
Poisson’s ratio is defined as the ratio of
For which material the Poisson’s ratio is more than unity
The property of a material by virtue of which it can be beaten or rolled into plates is called
The change in the unit volume of a material under tension with increase in its Poisson’s ratio will ,
The percentage reduction in area of a cast iron specimen during tensile test would be of the order of
If a material expands freely due to heating it will develop
In a tensile test, near the elastic limit zone, the
The stress necessary to initiate yielding is
In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called
The stress developed in a material at breaking point in extension is called
Rupture stress is
The elasticity of various materials is controlled by its
The ratio of lateral strain to the linear strain within elastic limit is known as
The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to
The stress at which extension of the material takes place more quickly as compared to the increase in load is called
Flow stress corresponds to
When it is indicated that a member is elastic, it means that when force is applied, it will
The energy absorbed in a body, when it is strained within the elastic limits, is known as
Resilience of a material is considered when it is subjected to
The maximum strain energy that can be stored in a body is known as
The total strain energy stored in a body is termed as
Proof  resilience   per material is known as
The stress induced in a body due to suddenly applied load compared to when it is applied gradually is
The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is
A material capable of absorbing large amount of energy before fracture is known as
A beam is loaded as cantilever. If the load at the end is increased, the failure will occur
A non-yielding support implies that the
The ratio of elongation in a prismatic bar due to its own weight (W) as compared to another similar bar carrying an additional weight (W) will be
In a prismatic member made of two materials so joined that they deform equally under axial stress, the unit stresses in two materials are
In riveted boiler joints, all stresses, shearing, bearing and tensile are based on the
The distance between the centres of the rivets in adjacent rows of zig-zag riveted joint is known as
Efficiency of a riveted joint is the ratio of its strength (max. load it can resist without failure) to the strength of the unpunched plate in
When two plates are butt together and riveted with cover plates with two rows of rivets, the joint is known as
A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as
A riveted joint in which the number otrivets decrease from innermost to outer most row is called
If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called
Diamond riveted joint can be adopted in the case of following type of joint
Rivets are made of following type of material
The weakest section of a diamond riveting is the section which passes through
The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is
The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called
A cylindrical section having no joint is known as
Longitudinal stress in a thin cylinder is
The safe twisting moment for a compound shaft is equal to the
The torsional rigidity of a shaft is expressed by the
The value of shear stress which is induced in the shaft due to the applied couple varies
A key is subjected to side pressure as well at shearing forces. These pressures are called
Which of the following law states that, the internal energy of a gas is a function of temperature
Properties like pressure and temperature in thermodynamic coordinates are
According to Avogadro’s law, for a given pressure and temperature, each molecule of a gas occupies
Work done in an adiabatic process between a given pair of end states depends on
Heat and work are:
Expand the term N.T.P
Which of the following statements about Zeroth law of thermodynamics is correct
In a free expansion process
Heat transfer is
A quasi-static process has main characteristics as it is
For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be
For reversible adiabatic process, change in entropy is
Heat flow is a quantity of heat transfer
The process in which no heat transfer takes place through boundaries is called as
Isochoric process is one in which
Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant
According to first law of thermodynamics
Carnot cycle efficiency depends upon
Carnot cycle efficiency is maximum when
In a Carnot cycle, heat is transferred at
During throttling process
Kelvin Planck’s law deals with
Which among the following variables controls the physical properties of a perfect gas
Which of the following laws are applicable to perfect gas
According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as
An ideal gas as compared to a real gas at very high pressure occupies
General gas equation is
What is the equation for entropy of a system if two parts 1 and 2 having entropies S1 and S2 are considered in equilibrium?
The ratio of minimum energy which must be consumed to perform the task to the actual amount of energy consumed in performing the same task is called as
Temperature of a gas is produced due to
According to kinetic theory of gases, the absolute zero temperature is attained when
Absolute zero pressure will occur
No liquid can exist as liquid at
degree of subcooling is the difference between
Boyle’s law i.e. pV = constant is applicable to gases under
Otto cycle consists of
Stirling and Ericsson cycles are
The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
Gas turbine cycle
Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts
Which of the following disciplines provides study of relative motion between the parts of a machine
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as
Which of the following is a lower pair
If two moving elements have surface contact in motion, such pair is known as
The example of lower pair is
Pulley in a belt drive acts as
The example of rolling pair is
Any point on a link connecting double slider crank chain will trace a
The purpose of a link is to
A universal joint is an example of
Rectilinear motion of piston is converted into rotary by
Pitch point on a cam is
The example of spherical pair is
Cross head and guides form a
A circular bar moving in a round hole is an example of
If some links are connected such that motion between them can take place in more than one direction, it is called
Kinematic pairs are those which have two elements that
lower pair is a
Automobile steering gear is an example of
In higher pair, the relative motion is
Which of the following has sliding motion
The example of higher pair is
Which of the following mechanism is obtained from lower pair
Which of the following would constitute a link
The Scott-Russell mechanism consists of
Davis steering gear consists of
Ackermann steering gear consists of
A completely constrained motion can be transmitted with .
Oldham’s coupling is the
Sense of tangential acceleration of a link
A mechanism is an assemblage of
The number of links in pantograph mechanism is equal to
Elements of pairs held together mechanically is known as
Shaft revolving in a bearing is the following type of pair
Rectangular bar in a rectangular hole is the following type of pair
A foot step bearing and rotor of a vertical turbine form examples of
Relationship between the number of links (L) and number of pairs (P) is
The tendency of a body to resist change from rest or motion is known as
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is
The advantage of the piston valve over D-slide valve is that in the former case
Flexible coupling is used because
With single Hooke’s joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
The Hooke’s joint consists of :
The Klein’s method of construction for reciprocating engine mechanism
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by
The e.g. of a link in any mechanism would experience
elliptical trammels
In automobiles the power is transmitted from gear box to differential through
The indicator using Watt mechanism is known as
The Ackermann steering mechanism is preferred to the Davis type in automobiles because
Transmission of power from the engine to the rear axle of an automobile is by means of
When a ship travels in a sea, which of the effect is more dangerous
In an ideal machine, the output as compared to input is
Governor is used in automobile to
For fluctuating loads, welsuited bearing is
Crowning on pulleys helps
Idler pulley is used
In multi-V-belt transmission, if one of the belt is broken, we have to change the
The moment on the pulley which produces rotation is called
Creep in belt drive is due to
The horse power transmitted by a belt is dependent upon
The locus of a point on a thread unwound from a cylinder will be
To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use
Throw of a cam is the maximum distance of the follower from
To obviate axial thrust, following gear drive is used
Which of the following is false statement in respect of differences between machine and structure
If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to
Typewriter constitutes
Lower pairs are those which have
A point on a link connecting double slider crank chain traces a
A pantograph is a mechanism with
Kinematic pairs are those which have
If the opposite links of a four bar linkage are equal, the links will always form a
Higher pairs are those which have
A cam mechanism imparts following motion
A cam with a roller follower would con stitute following type of pair
The approximate straight line mechanism is a
Open pairs are those which have
Peaucellier mechanism has
Hart mechanism has
The main disadvantage of the sliding pair is that it is
For a kinematic chain to be considered as mechanism
An eccentric sheave pivoted at one point rotates and transmits oscillatory motion to a link whose one end is pivoted and other end is connected to it. This mechanism has
Whitworth quick return mechanism is obtained by inversion of
In its simplest form, a cam mechanism consists of following number of links
Which of the following mechanisms produces mathematically an exact straight line motion
In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links
A kinematic chain requires at least
In a darg link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is
The following is the inversion of slider crank chain mechanism
Kinematic pairs are those which have
A typewriter mechanism has 7 number of binary joints, six links and none of higher pairs. The mechanism is
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is
In above example, the minimum length of the coupler will be
In S.H.M., acceleration is proportional to
For simple harmonic motion of the of follower, a cosine curve represents
In S.H.M., the velocity vector w.r.t. displacement vector
The frequency of oscillation at compared to earth will be
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be
The Bifilar suspension method is used to determine
Which is the false statement about the properties of instantaneous centre
Instantaneous center of rotation of a link in a four bar mechanism lies on
The number of links and instantaneous centers in a reciprocating engine mechanism are
According to Kennedy’s theorem, if three bodies have plane motions, their instantaneous centers lie on
Two systems shall be dynamically equivalent when
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
Angular acceleration of a link can be determined by dividing the
Corioli’s component of acceleration exists whenever a point moves along a path that has
The direction of Corioli’s component of acceleration is the direction
In a shaper mechanism, the Corioli’s component of acceleration will
Tangential acceleration direction is
Corioli’s component is encountered in
Klein’s construction gives a graphica construction for
Klein’s construction can be used to determine acceleration of various parts when the crank is at
The number of centers in a crank driven slider crank mechanism are
Corioli’s component acts
The sense of Corioli’s component is such that it
Klein’s construction can be used when
Klein’s construction is useful to determine
A circle passing through the pitch point with its center at the center of cam axis is known as
The pressure angle of a cam depends upon
Cam size depends upon
Cylindrical cams can be classified as
The maximum value of the pressure angle in case of cam is kept as
For the same lift and same angle of ascent, a smaller base circle will give
Cam angle is defined as the angle
Angle of descent of cam is defined as the angle
Angle of action of cam is defined as the angle