# Mock Test: SSC JE (ME)- 2

## 100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 2

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Attempt Mock Test: SSC JE (ME)- 2 | 100 questions in 100 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Mechanical Engineering SSC JE (Technical) for Mechanical Engineering Exam | Download free PDF with solutions
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### The fundamental unit of enthalpy is

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QUESTION: 4

Two blocks which are at different states are brought into contact with each other and allowedto reach a final state of thermal equilibrium. The temperature is specified by the

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QUESTION: 5

A piston-cylinder device with air at an initial temperature of 28º C undergoes an expansionprocess for which pressure and volume are related as given below:

What is the work done by the system?

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QUESTION: 6

The network output for the cycle 1-2-3-4-5-6- 1 shown in figure is

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QUESTION: 7

The point that connects the saturated liquid line to the saturated vapour line is called

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QUESTION: 8

The heating of a gas at constant pressure is governed by

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QUESTION: 9

A process, in which the working substance neither receives nor gives out heat to its surroundingsduring its expansion or compression, is called

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QUESTION: 10

If in the equation pvn = C. the value of n = γ , then the process is called

Solution:

Correct Answer :- A

Explanation : In an adiabatic process, the system is insulated from the surroundings and heat absorbed or released is zero. For an adiabatic process of an ideal gas,

pvγ = c is an adiabatic process.

QUESTION: 11

The condition for a reversible cyclic process is

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QUESTION: 12

The main cause for the irreversibility is

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QUESTION: 13

The coefficient of performance of a domestic refrigerator is

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QUESTION: 14

The thermodynamic cycle used in aircraft refrigeration is

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QUESTION: 15

When there is leakage of ammonia refrigerant, the sulphur stick gives

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QUESTION: 16

Carbon dioxide is

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QUESTION: 17

The heat rejection factor (HRF) is given by

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QUESTION: 18

This is considered as the first link in transmitting the gas forces to the output shaft

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QUESTION: 19

Piston compression rings are made of

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QUESTION: 20

For the same compression ratio and heat rejection

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QUESTION: 21

The most preferred type of carburettor is

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QUESTION: 22

The phenomenon of pre-ignition

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QUESTION: 23

The first nuclear power plant in India was located at

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QUESTION: 24

The primary fuel used in nuclear power plants is

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QUESTION: 25

Hard coke is used in

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QUESTION: 26

Which aspect is not valid for a fire tube locomotive boiler?

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QUESTION: 27

Fusible plug is fitted in a boiler to

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QUESTION: 28

The basic purpose of boiler drum is to

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QUESTION: 29

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

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QUESTION: 30

The mass number of a substance represents the sum of total number of

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QUESTION: 31

The must commonly used moderator in nuclear power plant is

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QUESTION: 32

The number of water level indicators in a boiler are generally ......... in number.

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QUESTION: 33

A safety valve usually employed with stationary boilers is

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QUESTION: 34

An economiser is installed in a boiler primarily to

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QUESTION: 35

A perfect fluid is

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QUESTION: 36

Surface tension is due to

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QUESTION: 37

Match List I (Physical properties of fluid) with List II (Dimensions/definitions) and select the
correct answer using the codes given below the list

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QUESTION: 38

Fluid is a substance which offers no resistance to change of

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QUESTION: 39

Normal depth in open channel flow is

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QUESTION: 40

The hydraulic jump results when

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QUESTION: 41

The equation of motion for a viscous fluid known as

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QUESTION: 42

The pressure measured with the help of a pressure gauge is called

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QUESTION: 43

The discharge over a suppresed sharp crested rectangular weir is given by

Here H1 is the difference in elevation between

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QUESTION: 44

The metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select thecorrect statement.

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QUESTION: 45

The loss of head at entrance in a pipe is where v =Velocity of liquid in the pipe

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QUESTION: 46

A compound pipe of diameter d1, d2, and d3 having length l1, l2 and l3 is to be replaced by an equivalent pipe of uniform diameter d and of the same length (l) as that of the compound pipe. The size of the equivalent pipe is given by

Solution:
QUESTION: 47

The loss of head due to viscosity for laminar flow in pipes is

where d = Diameter of pipe
l = Length of pipe
v = Velocity of the liquid in the pipe
μ = Viscosity of the liquid and
w = Specific weight of the flowing
liquid

Solution:
QUESTION: 48

Young's modulus is defined as the ratio of

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QUESTION: 49

Flow stress corresponds to

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QUESTION: 50

Select the proper sequence
1. Proportional limit
2. Elastic limit
3. Yielding
4. Failure

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QUESTION: 51

Creep is the gradual increase of

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QUESTION: 52

A member having length L, cross sectional area A and modulus of elasticity E is subjected to an
axial load W. The strain energy stored in this member is

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QUESTION: 53

The state of stresses on an element is a s shown in following figure.

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QUESTION: 54

The state of stress at a point in a loaded member is shown in figure below. The magnitude ofmaximum shear stress is

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QUESTION: 55

The ratio of linear stress to the linear strain is called

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QUESTION: 56

A simply supported beam with a gradually varying load from zero at B and w per unit length at A is shown fig. The shear force at B is equal to

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QUESTION: 57

The point of contra flexure is a point where

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QUESTION: 58

When a closely -coiled helical spring of mean diameter (D) is subjected to an axial load (W),
the deflection of the spring (δ) is given by

where d = Diameter of spring wire.
n =No. of turns of the spring, and
C = Modulus of rigidity for the spring
material.

Solution:
QUESTION: 59

A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (P). The volumetric strain is

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QUESTION: 60

The rate of change of displacement of a body is called

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QUESTION: 61

The law of motion involved in the recoil of gun is

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QUESTION: 62

The motion of a wheel of a car is

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QUESTION: 63

The wheels of a moving car possess

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QUESTION: 64

Which of the following is not exactly a property of material?

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QUESTION: 65

consider the following figure and match the following

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QUESTION: 66

Resistance to fatigue of a material is measured by

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QUESTION: 67

The bending stress in a curved beam is

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QUESTION: 68

Stress concentration is caused due to

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QUESTION: 69

A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is

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QUESTION: 70

Crushing resistance required to crush the rivet per pitch length is

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QUESTION: 71

The locus of instantaneous center of a moving body relative to a fixed body is known as the

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QUESTION: 72

A universal joint is an example of

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QUESTION: 73

The product of diametral pitch and circular pitch is

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QUESTION: 74

The amount of energy absorbed by a flywheel is determined form the

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QUESTION: 75

The condition of isochronisms can be realized in a

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QUESTION: 76

A point on a connecting link (excluding end points) of a double slider crank mechanismtrances a

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QUESTION: 77

Which of the following statement is wrong?

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QUESTION: 78

An exact straight line motion mechanism is a

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QUESTION: 79

The contact ratio is given by

Solution:
QUESTION: 80

The cam follower generally used in automobile engines is

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QUESTION: 81

Most commonly used materials cast by using cold-chamber die casting include

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QUESTION: 82

The casting defect caused by the erosion of sand

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QUESTION: 83

When machining a hard and brittle metal like cast iron, the type of chips produced is

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QUESTION: 84

A milling cutter has the following number of cutting edges.

Solution:
QUESTION: 85

Oxyacetylene flame cuts metal by its

Solution:
QUESTION: 86

Match the List-I (Unconventional machining method) with List-II (Medium used):

Solution:
QUESTION: 87

In a centrifugal casting method

Solution:
QUESTION: 88

The operation of cutting of a flat sheet to the desired shape is called

Solution:
QUESTION: 89

Spot welding is used for welding

Solution:
QUESTION: 90

Thermit welding is often used in

Solution:
QUESTION: 91

Neutral flame is use to weld

Solution:
QUESTION: 92

An oxidising process used for aluminium and magnesium articles is called

Solution:
QUESTION: 93

Drilling is an example of

Solution:
QUESTION: 94

A twist drill is a

Solution:
QUESTION: 95

Twist drills are made of

Solution:
QUESTION: 96

The enlarging of an existing circular hole with a rotating single point tool is called

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QUESTION: 97

The operation performed on a shaper is

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QUESTION: 98

The operation performed on a shaper is

Solution:
QUESTION: 99

The hardness of a grinding wheels is specified by

Solution:
QUESTION: 100

The soft grade grinding wheels are denoted by the letters

Solution:
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