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# Test: Mechanical Engineering- 9

## 100 Questions MCQ Test Mock Test Series for SSC JE Mechanical Engineering | Test: Mechanical Engineering- 9

Description
This mock test of Test: Mechanical Engineering- 9 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 100 Multiple Choice Questions for Mechanical Engineering Test: Mechanical Engineering- 9 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Mechanical Engineering- 9 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Mechanical Engineering- 9 exercise for a better result in the exam. You can find other Test: Mechanical Engineering- 9 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### The static friction

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QUESTION: 4

If the body falls freely under gravity, then the gravitational acceleration is taken as

Solution:
QUESTION: 5

According to Newton's first law of motion

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QUESTION: 6

The time of flight of a projectle on downward inclined plane depends upon

Solution:
QUESTION: 7

Match List-I (Material) with List-II (Young's modulus) :  Solution:
QUESTION: 8

A material has identical properties in all directions, it is said to be

Solution:
QUESTION: 9

Modulus of resilience is

Solution:
QUESTION: 10

The relationship between modulus of elasticity (E) and modulus or rigidity (G) is

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QUESTION: 11

The section modulus of a circular section about an axis through its centre of gravity is

Solution:
QUESTION: 12

A bar of square cross-section has been subjected to an axial tensile load. A plane normal to the axis of loading will have

Solution:
QUESTION: 13

The assumption, generally, made in the theory of simple bending is that

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QUESTION: 14

The property of a material by virtue of which it can be beaten or rolled into plates is called

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QUESTION: 15

At the neutral axis of a beam

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QUESTION: 16

The ratio of the largest load in a test to the original cross-sectional area of the test piece is called

Solution:
QUESTION: 17

Which of the following is an example of heterogeneous system?

Solution:
QUESTION: 18

Which of the following are intensive properties

1. Kinetic energy

2. Specific enthalpy

3. Pressure

4. Entropy

Solution:
QUESTION: 19

During throttling process

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QUESTION: 20

On a P-V-T surface, the triple point and critical point are seen as respectively

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QUESTION: 21

The equation is known as

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QUESTION: 22

The internal energy of an ideal gas is a function of

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QUESTION: 23

When a real gas undergoes Joule-thomson expansion the temperature

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QUESTION: 24

Select the correct stattement as per Charles' law

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QUESTION: 25

A thermodynamic system is considered to be an isolated one if

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QUESTION: 26

When the expansion or compression takes place according to the law pvn = C, the process is known is

Solution:
QUESTION: 27

The heat absorbed or rejected by the working substance is given by

where ds = Increase or decrease of entropy
T = Absolute temperature, and
dQ= Heat absorbed or rejected

Solution:
QUESTION: 28

The entropy of water at 0ºC is assumed to be

Solution:
QUESTION: 29

The COP of a heat pump can be increased either by decreasing TH byDT or by increasin TL byDT. The new COP of the heat pump is

Solution:
QUESTION: 30

Which is usually the costliest item in a refrigeration system ?

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QUESTION: 31

In vapour compression refrigeration system, at entrance to which component the working fluid is superheat vapour ?

Solution:
QUESTION: 32

In electroluxn refrigerator

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QUESTION: 33

The desirable property of a refrigerant is

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QUESTION: 34

The purpose of balance weight in crankshaft

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QUESTION: 35

Thermal efficiency of CI engine is higher than that of SI engine due to

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QUESTION: 36

With increasing temperature of intake air, Ic engine efficiency

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QUESTION: 37

For the same peak pressure and heat input

Solution:
QUESTION: 38

For a for cylinder vertical engine, the commonly used firing order is

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QUESTION: 39

The octane number of petrol, generally available, is

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QUESTION: 40

The minimum number of rings in a piston are

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QUESTION: 41

An ideal Fluid

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QUESTION: 42

Consider a soap film bubble of diameter D. If the external pressure is P0 and the surface tension of the soap film is s, the expression for the pressure inside the bubble is

Solution:
QUESTION: 43

The maximum and minimum magnitude of resultant forces is 1000 N and 500 N at point. What are the values of two forces acting on it?

Solution:
QUESTION: 44

Gauge pressure at a point is equal to

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QUESTION: 45

A metal block is thrown into deep lake. As it sinks deeper in water, the buoyant force acting on it

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QUESTION: 46

The length of divergent part of venturi meter in comparison to convergent portion is

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QUESTION: 47

The rate of flow through venturimeter varies as

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QUESTION: 48

Euler's equation in the differential form for the motion of liquids is given by

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QUESTION: 49

Venturimeter is used to

Solution:
QUESTION: 50

An orifice is said to be large, if

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QUESTION: 51

The loss of head at exit of a pipe is

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QUESTION: 52

A notch is used to measure ................ of liquids.

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QUESTION: 53

The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

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QUESTION: 54

Which of the following advantage is not given by superheating in Rankine cycle ?

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QUESTION: 55

In Rankine cycle the work output from the turbine is given by

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QUESTION: 56

In regenerative cycle, feed water is heated by

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QUESTION: 57

At critical point the enthalpy of vaporization is

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QUESTION: 58

For a given set of operating pressure limits of a Rankine cycle, the highest efficiency occurs for

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QUESTION: 59

Which one of the following cycles working within the same temperature limits has the highest work ratio?

Solution:
QUESTION: 60

Group - I shows different heat addition processes in power cycle. Like wise Group –
II shows different heat removal processes. Group- III lists power cycles. Match item from
Group I, and III Solution:
QUESTION: 61

Which of the following is not a boiler mounting ?

Solution:
QUESTION: 62

The function of a safety valve is

Solution:
QUESTION: 63

An air preheater is installed

Solution:
QUESTION: 64

Match List-I (Application) with List-II (Mechanism) and select the correct answer using
the codes given below the lists: Solution:
QUESTION: 65

In automobiles, Hook's joint is used between which of th followings ?

Solution:
QUESTION: 66

The angle between the line of stroke (line of motion of the follower) and the normal to the pitch curve at any point is referred to as

Solution:
QUESTION: 67

For an involute gear, the ratio, pitch circle radius/ base circle radius is (f is the pressure angle)

Solution:
QUESTION: 68

Large pressure angle of the gear results in

Solution:
QUESTION: 69

The height of a Watt governor is

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QUESTION: 70

The mechanism consisting of three turning pairs and one sliding pair, is called a

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QUESTION: 71

The coriolis component of acceleration depends upon

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QUESTION: 72

The maximum fluctuation of speed is the

Solution:
QUESTION: 73

Which of the following governor is used to drive a gramophone ?

Solution:
QUESTION: 74

The selection of the factor of safety in design is not dependent upon :

Solution:
QUESTION: 75

Failure of a material is called fatigue when it fails

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QUESTION: 76

The fatigue life of a part can be improved by

Solution:
QUESTION: 77

An aluminium member is designed on the basis of

Solution:
QUESTION: 78

Guest's theory is used for

Solution:
QUESTION: 79

Failure of a material is called fatigue when if fails

Solution:
QUESTION: 80

Solution:
QUESTION: 81

Which of the following pattern-materials is usedin precision casting ?

1. Plaster paris

2. Plastics

3. Anodized aluminium alloy

4. Frozen mercury

Solution:
QUESTION: 82

Misrun is a casting defect which occur due to

Solution:
QUESTION: 83

The purpose of gate is to

Solution:
QUESTION: 84

Sprue in casting refers to

Solution:
QUESTION: 85

Ring rolling is used

Solution:
QUESTION: 86

Match List-I (metal forming process) with List- II (Associated feature) and select the correct
answer using the codes given below the lists: Solution:
QUESTION: 87

The angle on which the strength of the tool depends is

Solution:
QUESTION: 88

Negative rake angle is usually provided on

Solution:
QUESTION: 89

Ceramic tools are fixed to tool body by

Solution:
QUESTION: 90

The relationship for cutting tool life is

Solution:
QUESTION: 91

The heat treatment process used for casting is

Solution:
QUESTION: 92

Brass is an alloy of

Solution:
QUESTION: 93

Monel metal is an alloy of

Solution:
QUESTION: 94

Loam sand is a mixture of

Solution:
QUESTION: 95

In shielded arc welding

Solution:
QUESTION: 96

The angle between the face and flank of the single point cutting tool is known as

Solution:
QUESTION: 97

Which of the following casting processes uses a rotating mould ?

Solution:
QUESTION: 98

Solution:
QUESTION: 99

The correct sequence of tool materials in increasing order of their ability to retain their hot hardness is

Solution:
QUESTION: 100

Flank wear depeds upon the

Solution: