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# Test: Mechanical Engineering- 10

## 100 Questions MCQ Test Mock Test Series for SSC JE Mechanical Engineering | Test: Mechanical Engineering- 10

Description
This mock test of Test: Mechanical Engineering- 10 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 100 Multiple Choice Questions for Mechanical Engineering Test: Mechanical Engineering- 10 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Mechanical Engineering- 10 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Mechanical Engineering- 10 exercise for a better result in the exam. You can find other Test: Mechanical Engineering- 10 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
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QUESTION: 2

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QUESTION: 3

### A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called

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QUESTION: 4

In a steady flow process, the ratio of

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QUESTION: 5

The efficiency of Carnot cycle depends upon

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QUESTION: 6

In a quasi equilibrium process, the pressure in a system

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QUESTION: 7

A system and its environment put together constitute

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QUESTION: 8

The standard fixed point of thermometry is

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QUESTION: 9

In free expansion process

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QUESTION: 10

A PMM1 is

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QUESTION: 11

Compressed air coming out from a punctured football

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QUESTION: 12

The figure as shown below is the variation of the pressure of a gas with temperature (not volume) a given mass of an idea gas is subjected to various process starting from the state represented by point A. Which graph does an isochoric process represent Solution:
QUESTION: 13

Which is usually the costliest item in a refrigeration system ?

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QUESTION: 14

COP of a domestic refrigerator in comparison to domestic air conditioner will be

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QUESTION: 15

When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by

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QUESTION: 16

The difference between dry bulb temperature ad wet bulb temperature, is called

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QUESTION: 17

The expressionis used for calculating

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QUESTION: 18

In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a

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QUESTION: 19

In a four stroke cycle diesel engine, the exhaust valve

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QUESTION: 20

A petrol engine, during suction stroke draws

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QUESTION: 21

The probability of knocking in diesel engines is increased by

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QUESTION: 22

The frictional power (F.P.) is given by

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QUESTION: 23

The nuclear radiators produced in a reactor which must be shielded are

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QUESTION: 24

The minimum number of rings in a piston

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QUESTION: 25

In a SI engine very high compression ratio cannot be used because

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QUESTION: 26

Lenoir cycle is used in

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QUESTION: 27

Ethyl fluid is used

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For practical purposes ethyl fluid is used to increase the octane rating of the fuel.

QUESTION: 28

Hard coke is used in

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QUESTION: 29

The incomplete combustion is indicated by the presence of

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QUESTION: 30

Efficiency of chimney draught is of the order of

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QUESTION: 31

Power required by fan in forced draught is ...... to that of induced draught

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QUESTION: 32

Rankine cycle is a

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QUESTION: 33

Which of the following component is not subjected to high-pressure high-temperature steam ?

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QUESTION: 34

Benson boiler requires

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QUESTION: 35

The amount of water evaporated in kg per kg of fuel burnt is called

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QUESTION: 36

In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to

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QUESTION: 37

Which of the following statement is correct ?

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Lancashire Boiler is a horizontal type and stationary fire tube boiler.

There are two types of a fire-tube boiler which are Internally & Externally fired boilers

Babcock and Wilcox Boiler was discovered by George Herman Babcock and Stephen Wilcox in the year 1967. This is a water tube boiler, used in steam power plants. In this type of boilerwater is circulated inside the tubes and hot gases flow over the tubes.

QUESTION: 38

Surface tension is due to

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QUESTION: 39

The Mercury is known as non-wetting liquid because it does not wet the surface. The Mercury posses this property due to

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Correct Answer :- a

Explanation : Capillarity is the property of both cohesion and adhesion. But surface tension is due to cohesion only it does not involve adhesion. As cohesive force is higher than adhesion in mercury it does not wet the glass.

QUESTION: 40

Which one of the following is a typical example of non-newtonian fluid of Pseudo plastic variety

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QUESTION: 41

Fluid is a substance which offers no resistance to change of

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QUESTION: 42

The continuity equation represents conservation of

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QUESTION: 43

Navier-Stoke's equation represents the conservation of

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QUESTION: 44

When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressure is called

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QUESTION: 45

The point at which the resultant pressure on an immersed surface acts, is known as

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QUESTION: 46

A manometer is used to measure

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QUESTION: 47

The discharge through a venturimeter is given by

where Cd = Coefficient of discharge,
a1 = Area at inlet,
a2 = Area at throat, and
h = Venturi -head

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QUESTION: 48

Multi -stage centrifugal pumps are used to

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Correct Answer :- b

Explanation : Within a multistage centrifugal pump, each impeller acts like a single-stage pump within a chain of pumps. As the liquid is propelled from one impeller to the next within the pump’s housing, the pressure of the liquid continuously increases as it passes through until it exits the pump.

By relying on multiple impellers to distribute the pressure-building load of the pump, multistage centrifugal pumps can generate greater power and pressure with smaller motors, using less energy.

The biggest advantage of centrifugal pumps is their aforementioned simplicity. They don't require any valves, or many moving parts. This makes them easy to produce with many different materials. It also allows them to move at high speeds with minimal maintenance.

QUESTION: 49

Discharge of a centrifugal pump is

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QUESTION: 50

The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

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QUESTION: 51

The forces, whose lines of action are parallel to each other and act in the same directions, are known as

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QUESTION: 52

Non -coplaner concurrent forces are those forces which

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QUESTION: 53

The angle of inclination of the plane at which the body begin to move down the plane is called

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QUESTION: 54

A leader is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

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QUESTION: 55

The ratio of change in volume to the original volume is called

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QUESTION: 56

A localised compressive stress at the area of contact between two members is known as

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QUESTION: 57

The bending moment on a section is maximum where shear force is

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Correct Answer :- c

Explanation : Both zero and changes sign is the correct answer. Because when sf changes sign from max to min or vice versa, it will come to a point when sf will be zero.

So according to the given options "changes sign" is the correct answer.

QUESTION: 58

The maximum bending moment of a simply supported beam of span l and carrying a pointloadW at the centre of beam, is

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QUESTION: 59

When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as

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QUESTION: 60

Rupture stress is

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QUESTION: 61

A material capable of absorbing large amount of energy before fracture is known as

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QUESTION: 62

Modulus of resilience is

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QUESTION: 63

If a shaft is rotating at N revolutions per minute with an applied torque T N-m, the power being transmitted by the shaft in watt is

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QUESTION: 64

For a circular shaft of diameter d subjected to torque T, the maximum value of the shear stress
is

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QUESTION: 65

The steel bars in reinforced cement concrete beam are located at

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QUESTION: 66

A simply supported beam of span L carries a point load P at the mid span. The downward  deflection under the load will be

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QUESTION: 67

Quick return mechanics is used in

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QUESTION: 68

Oldham's coupling is the inversion of

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QUESTION: 69

A Hook's joint is used to connect

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QUESTION: 70

The cam size depends upon

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QUESTION: 71

The motion transmitted between the teeth of two spur gears is generally

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QUESTION: 72

Common contact ratio of a pair of spur pinion

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QUESTION: 73

The coriolis component of acceleration acts

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QUESTION: 74

The condition for correct steering of a Davis steering gear is

where a = Angle of inclination of the links to the vertical

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QUESTION: 75

The metal suitable for bearings subjected to light loads is

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The metal suitable for bearings subjected to light loads is phosphor bronze.

QUESTION: 76

The process which improves the machinability of steels, but lowers the hardness and tensile strength is

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QUESTION: 77

Gears are casted by

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QUESTION: 78

The ratio of endurance limit in shear to the endurance limit in flexure is

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QUESTION: 79

A thin spherical shell of internal diameter d is subjected to an internal pressure p. If st is the tensile stress for the shell material, then thickness of shell is equal to

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Correct Answer :- d

Explanation : In case of thin spherical shell hoop and longitudinal stresses are same as here length and dia are not two separate things. Both are equal. That's why when we equal resisting stress to the stress due to internal pressure same value is obtained for hoop and longitudinal.

QUESTION: 80

The centre to centre distance between two consecutive rivets in a row, is called

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QUESTION: 81

Negative rake angle is usually provided on

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QUESTION: 82

Ceramic cutting tool chip are fixed to the tool body by

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QUESTION: 83

Size of a shaper is given by

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QUESTION: 84

Which of the following is an example of rothogonal cutting ?

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QUESTION: 85

A trepanning tool is used on

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QUESTION: 86

Size of shaper is specified by

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QUESTION: 87

The soldering process is carried out in the temperature range

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QUESTION: 88

The commonly used flux for brazing is

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QUESTION: 89

Which of the following welding techniques uses a nonconsumable electrode ?

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QUESTION: 90

Oxyacetylene flame cuts metal by its

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QUESTION: 91

Silicon is added in low carbon steels to

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QUESTION: 92

A steel alloy containing 36% nickel is called

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QUESTION: 93

The sand used for making cores is

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QUESTION: 94

The purpose of a gate is to

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QUESTION: 95

A casting defect which occurs near the ingrates as rough lumps on the surface of a casting is known as

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QUESTION: 96

The acetylene cylinder is usually painted with

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QUESTION: 97

The high cutting speed and large rake angle of the tool will result in the formation of

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QUESTION: 98

Tool life is measured by the

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QUESTION: 99

The chamfering is an essential operation after

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QUESTION: 100

In electro-discharge machining, tool is made of

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