Mock Test: SSC JE (ME)- 8

Mock Test: SSC JE (ME)- 8

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100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 8

Mock Test: SSC JE (ME)- 8 for Mechanical Engineering 2023 is part of Mechanical Engineering SSC JE (Technical) preparation. The Mock Test: SSC JE (ME)- 8 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Mock Test: SSC JE (ME)- 8 MCQs are made for Mechanical Engineering 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Mock Test: SSC JE (ME)- 8 below.
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Mock Test: SSC JE (ME)- 8 - Question 1

Which one of the following thermodynamic processes approximates the steaming of food ina pressure cooker ?

Mock Test: SSC JE (ME)- 8 - Question 2

Ice kept in a well insulated thermo flask is an example of which system ?

Mock Test: SSC JE (ME)- 8 - Question 3

For a simple closed system of constant composition, the difference between the net heat and work interactions is identifiable as the change in

Mock Test: SSC JE (ME)- 8 - Question 4

Assertion (A) : Thermodynamic work is path–
dependent except for an adiabatic process.

Reason (R) : It is always possible to take a
system from a given initial state to any final state

Mock Test: SSC JE (ME)- 8 - Question 5

Which one of the following is correct ?

The cyclic integral of (dQ –dW) for a process is

Mock Test: SSC JE (ME)- 8 - Question 6

The variables which control the physical properties of a perfect gas are

Mock Test: SSC JE (ME)- 8 - Question 7

In an isothermal process

Mock Test: SSC JE (ME)- 8 - Question 8

In a free expansion process

Mock Test: SSC JE (ME)- 8 - Question 9

The isothermal and adiabatic process are regarded as

Mock Test: SSC JE (ME)- 8 - Question 10

The efficiency of Joule cycle is

Mock Test: SSC JE (ME)- 8 - Question 11

In a vapour compression refrigeration system, throttle valve is used in place of an expander because

Mock Test: SSC JE (ME)- 8 - Question 12

Vapour absorption refrigeration system works using the

Mock Test: SSC JE (ME)- 8 - Question 13

In a 3 ton capacity water cooler, water enters at 30ºC and leaves at 15ºC steadily. What is the water flow rate per hour ?

Mock Test: SSC JE (ME)- 8 - Question 14

The correct sequence of the given components of a vapour compression refrigerator is

Mock Test: SSC JE (ME)- 8 - Question 15

Where is an air refrigeration cycle generally employed ?

Mock Test: SSC JE (ME)- 8 - Question 16

The subcooling in a refrigeration cycle

Mock Test: SSC JE (ME)- 8 - Question 17

A vapour absorption refrigeration system

Mock Test: SSC JE (ME)- 8 - Question 18

Which gas power cycle consist of four processes during which work alone is transferred during which work alone is transferred during two processes and heat alone is transferred during the other two processes ?

Mock Test: SSC JE (ME)- 8 - Question 19

Divided chamber diesel engines use lower injection pressure compared to open chamberengines because

Mock Test: SSC JE (ME)- 8 - Question 20

The tendency of knocking in CI engine reduced by

Mock Test: SSC JE (ME)- 8 - Question 21

The discharge of hydrocarbons from petrol automobile exhaust is minimum when the vehicle is

Mock Test: SSC JE (ME)- 8 - Question 22

Which one of the following fuels can be obtained by fermentation of vegetable matter ?

Mock Test: SSC JE (ME)- 8 - Question 23

Which one of the following automobile exhaust gas pollutants is a major cause of photochemical smog ?

Mock Test: SSC JE (ME)- 8 - Question 24

When a hydrocarbon fuel burns is excess air orsat analysis of products of combustion will show

Mock Test: SSC JE (ME)- 8 - Question 25

Of all power plants, hydel is more disadvantageous when one compares the

Mock Test: SSC JE (ME)- 8 - Question 26

In thermal power plants, the deaerator is used mainly to

Mock Test: SSC JE (ME)- 8 - Question 27

The degree of reaction of a turbine is defined as the ratio of

Mock Test: SSC JE (ME)- 8 - Question 28

The expression for the maximum efficiency of a Parson's turbine is (a is the angle made by
absolute velocity at inlet)

Mock Test: SSC JE (ME)- 8 - Question 29

The degree of reaction of an impulse turbine

Mock Test: SSC JE (ME)- 8 - Question 30

With natural uranium, which of the following is used as moderator ?

Mock Test: SSC JE (ME)- 8 - Question 31

A safety valve mainly used with locomotive and marine boilers is

Mock Test: SSC JE (ME)- 8 - Question 32

A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called

Mock Test: SSC JE (ME)- 8 - Question 33

In a boiler, the heat is lost

Mock Test: SSC JE (ME)- 8 - Question 34

The fittings mounted on the boiler for its proper and safe functioning is a

Mock Test: SSC JE (ME)- 8 - Question 35

Which one of the following sequences indicates the correct order for flue gas flow in the steam power plant layout ?

Mock Test: SSC JE (ME)- 8 - Question 36

Statement (I) : A small insect can sit on the free surface of a liquid though insect's density is higher than that of the liquid.
Statement (II) : Liquids have viscosity

Mock Test: SSC JE (ME)- 8 - Question 37

In the boundary layer, the flow is

Mock Test: SSC JE (ME)- 8 - Question 38

For an irrotation flow, the velocity potential lines and the streamlines are always

Mock Test: SSC JE (ME)- 8 - Question 39

The instrument preferred in the measurement of highly fluctuating velocities in air flows is

Mock Test: SSC JE (ME)- 8 - Question 40

A venturi meter is a device based on the bernoulli principle and is used for measuring

Mock Test: SSC JE (ME)- 8 - Question 41

The loss of head due to sudden enlargement is attributed to

Mock Test: SSC JE (ME)- 8 - Question 42

For laminar flow through a pipe, the discharge varies

Mock Test: SSC JE (ME)- 8 - Question 43

Why are surge tanks used in pipe line ?

Mock Test: SSC JE (ME)- 8 - Question 44

The correct sequence of the given hydraulic turbines in decreasing order of their specific speeds is

Mock Test: SSC JE (ME)- 8 - Question 45

With an increase in size of tube, the rise or depression of liquid in the dube due to surface tension will

Mock Test: SSC JE (ME)- 8 - Question 46

A differential can be used to measure

Mock Test: SSC JE (ME)- 8 - Question 47

In one dimensional flow, the flow

Mock Test: SSC JE (ME)- 8 - Question 48

The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

Mock Test: SSC JE (ME)- 8 - Question 49

The point, through which the whole weight of the body acts, irrespective of its position, is known as

Mock Test: SSC JE (ME)- 8 - Question 50

The moment of inertia of a square of side (a) about an axis through its centre of gravity is

Mock Test: SSC JE (ME)- 8 - Question 51

Which of the following is a scalar quantity ?

Mock Test: SSC JE (ME)- 8 - Question 52

A rod of length l tapers uniformly from a diameter D at one end to a diameter d at the other. The Young's modulus of the material is E. The extension caused by an axial load P is

Mock Test: SSC JE (ME)- 8 - Question 53

What are the normal and shear stresses on the 45º planes shown ?

Mock Test: SSC JE (ME)- 8 - Question 54

What is the safe working pressure for a spherical pressure vesel 1.5 m internal diameter and 1.5 cm wall thickness, if the maximum allowable tensile stress is 45 MPa ?

Mock Test: SSC JE (ME)- 8 - Question 55

Which one of the following portions of the loaded beam shown in the given figure is subjected to pure bending ?

Mock Test: SSC JE (ME)- 8 - Question 56

Match List-I (End conditions of columns) with List-II (Lowest critical load) and select the
correct answer using the codes given below the lists:

Mock Test: SSC JE (ME)- 8 - Question 57

Strain energy stored in a body of volume V subjected to uniform stress s is

Mock Test: SSC JE (ME)- 8 - Question 58

Every direct stress is always accompanied by a strain in its own direction and an opposite kind of stain in every direction, at right angles to it. Such a strain is known as

Mock Test: SSC JE (ME)- 8 - Question 59

When a rectangular bar of length l, breadth b and thickness t is subjected to an axial pull of P,
then linear strain (e) is given by

Mock Test: SSC JE (ME)- 8 - Question 60

A concentrated load is one which

Mock Test: SSC JE (ME)- 8 - Question 61

When shear force at a point is zero, then bending moment is .......... at that point.

Mock Test: SSC JE (ME)- 8 - Question 62

The Young's modulus of a material is 125 GPa and Poissons ratio is 0.25.The modulus rigidityof the material is

Mock Test: SSC JE (ME)- 8 - Question 63

The shear force at the centre of a simply supported beam with a gradually varying load from zero at both ends to w per metre at the centre , is

Mock Test: SSC JE (ME)- 8 - Question 64

When a slider moves with a velocity 'V' on a link rotating at an angular speed ofw the Coriolis
component of acceleration is given by

Mock Test: SSC JE (ME)- 8 - Question 65

The choice of displacement diagram during rise or return of a follower of a cam-follower mechanism is based on dynamic considerations. For high speed cam follower is

Mock Test: SSC JE (ME)- 8 - Question 66

In a slider-crank mechanism, the velocity of piston becomes maximum when

Detailed Solution for Mock Test: SSC JE (ME)- 8 - Question 66

Where r = crank radius, ω = crank speed, n = Obliquity ratio

Velocity of slider will be maximum at θ = 90°, (∵ sin function is maximum at 90° i.e. sin 90° = 1)

∴ Vmax = rω(1 + 0) = rω

When θ = 90°, i.e. crank is perpendicular to the line of stroke, the velocity of the slider is maximum.

Mock Test: SSC JE (ME)- 8 - Question 67

A reverted gear train is one in which the output shaft and input shaft

Mock Test: SSC JE (ME)- 8 - Question 68

Which of the following is a turning pair ?

Mock Test: SSC JE (ME)- 8 - Question 69

A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a

Mock Test: SSC JE (ME)- 8 - Question 70

The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

Mock Test: SSC JE (ME)- 8 - Question 71

The mechanism in which two are turning pairs and two are sliding pairs, is called a

Mock Test: SSC JE (ME)- 8 - Question 72

Which of the following is an inversion of a single slider crank chain ?

Mock Test: SSC JE (ME)- 8 - Question 73

When two links are connected by a pin joint, there instantaneous centre lies

Mock Test: SSC JE (ME)- 8 - Question 74

If the size of a standard specimen for fatigue testing machine is increased the endurance limit for the material will

Mock Test: SSC JE (ME)- 8 - Question 75

Disruptive strength is the maximum strength of a metal, when

Mock Test: SSC JE (ME)- 8 - Question 76

The bolts in a rigid flanged coupling connecting two shafts transition power are subjected to

Mock Test: SSC JE (ME)- 8 - Question 77

The railway carriage couplings have

Mock Test: SSC JE (ME)- 8 - Question 78

The acme threads are usually found on

Mock Test: SSC JE (ME)- 8 - Question 79

Which of the following has threads at both ends ?

Mock Test: SSC JE (ME)- 8 - Question 80

The washer is generally specified by its

Mock Test: SSC JE (ME)- 8 - Question 81

Magnetic forming is an example of

Mock Test: SSC JE (ME)- 8 - Question 82

Match List-I (Type of Forging) with List-II (Operation) and select the correct answer using
the codes given below the lists:

Mock Test: SSC JE (ME)- 8 - Question 83

What does hydrostatic pressure in extrusion process improve ?

Mock Test: SSC JE (ME)- 8 - Question 84

Which one of the following metal forming processes is not a high energy rate forming processes ?

Mock Test: SSC JE (ME)- 8 - Question 85

The correct sequence of the given processes in manufacturing by powder metallurgy is

Mock Test: SSC JE (ME)- 8 - Question 86

Arc blow is more common in

Mock Test: SSC JE (ME)- 8 - Question 87

In which of the following welding process flux is used in the form of granules ?

Mock Test: SSC JE (ME)- 8 - Question 88

Lathe machine with turret can turn a work piece of limited length only because

Mock Test: SSC JE (ME)- 8 - Question 89

Tool life increases with increase in

Mock Test: SSC JE (ME)- 8 - Question 90

The most important function of the cutting fluid is to

Mock Test: SSC JE (ME)- 8 - Question 91

The mode of deformation of the metal during spinning is

Mock Test: SSC JE (ME)- 8 - Question 92

The increase in hardness due to cold working, is called

Mock Test: SSC JE (ME)- 8 - Question 93

When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

Mock Test: SSC JE (ME)- 8 - Question 94

The negative rake is usually provided on

Mock Test: SSC JE (ME)- 8 - Question 95

Flank wear occurs on the

Mock Test: SSC JE (ME)- 8 - Question 96

Which of the following property is desirable for materials used in tools and machines ?

Mock Test: SSC JE (ME)- 8 - Question 97

The property of a material due to which it breaks with little permanent distortion, is called

Mock Test: SSC JE (ME)- 8 - Question 98

Malleable cast iron is produced

Mock Test: SSC JE (ME)- 8 - Question 99

Connecting rod is , usually, made from

Mock Test: SSC JE (ME)- 8 - Question 100

Which of the following is a point imperfection ?

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Mechanical Engineering SSC JE (Technical)

6 videos|97 docs|55 tests