Mock Test: SSC JE (ME)- 6

# Mock Test: SSC JE (ME)- 6

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## 100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 6

Mock Test: SSC JE (ME)- 6 for Mechanical Engineering 2023 is part of Mechanical Engineering SSC JE (Technical) preparation. The Mock Test: SSC JE (ME)- 6 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Mock Test: SSC JE (ME)- 6 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)- 6 below.
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Mock Test: SSC JE (ME)- 6 - Question 1

### Match the following List - I with List -II:

Mock Test: SSC JE (ME)- 6 - Question 2

### Which one of the following is not the correct statement about control volume?

Mock Test: SSC JE (ME)- 6 - Question 3

### Match List - I with List -II the following:

Mock Test: SSC JE (ME)- 6 - Question 4

Heat transferred to a closed stationary system at constant volume is equal to

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 4

The first law of thermodynamics is dQ= du+dw. (Where symbols have usual meaning) For a chemical system dw= pdv, but when the volume is constant, dv=0 and, dQ=du. So, under the condition of constant volume heat transferred is equal to the change in the internal Energy of the system.

Mock Test: SSC JE (ME)- 6 - Question 5

It is desired to bring about a certain change in the state of a system by performing work on thesystem under adiabatic conditions.

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

Key concept in analyzing the filling of an evacuated tank is

Mock Test: SSC JE (ME)- 6 - Question 7

In the vander waal’s equation, the unit of constant a is

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 7

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

An Open system is one in which

Mock Test: SSC JE (ME)- 6 - Question 9

The specific heat of water is

Mock Test: SSC JE (ME)- 6 - Question 10

Which of the following statement is correct ?

Mock Test: SSC JE (ME)- 6 - Question 11

The....... states that changes of internal energy of a perfect gas is directly proportional to the change of temperature.

Mock Test: SSC JE (ME)- 6 - Question 12

When gas is heated at constant pressure, the heat supplied is utilised in

Mock Test: SSC JE (ME)- 6 - Question 13

Thermoelectric refrigeration system is based on

Mock Test: SSC JE (ME)- 6 - Question 14

A reversible heat engine runs between high temperature T1 and low temperature T2. The work output of this heat engine is used to run a reversible refrigeration cycle absorbing heat at temperature T2. What is the COP of the combined system ?

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 14

Mock Test: SSC JE (ME)- 6 - Question 15

Superheating in refrigeration cycle

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 15

Superheating is a refrigeration cycle decrease coefficient of performance. In practice, there is a loss of 1% of COP for every 2.5C of superheating in suction line. The lining of suction lines is a solution to minimize undesirable heat accumulation.

Hence, the answer is decreases COP.

Mock Test: SSC JE (ME)- 6 - Question 16

A one tonner refrigerating machine means that

Mock Test: SSC JE (ME)- 6 - Question 17

Hydrogen is used in electrolux refrigeration system so as to ....... the rate of evaporation ofthe liquid ammonia passing through the evaporator.

Mock Test: SSC JE (ME)- 6 - Question 18

Engine of different cylinder dimensions, power and speed are compared on the basis of

Mock Test: SSC JE (ME)- 6 - Question 19

Match the List-I (IC engine parts) with List-II (Materials) following :

Mock Test: SSC JE (ME)- 6 - Question 20

When the engines are built to withstand the same thermal and mechanical stresses

Mock Test: SSC JE (ME)- 6 - Question 21

The float in the carburetor of a petrol engine controls

Mock Test: SSC JE (ME)- 6 - Question 22

In an I.C. engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as

Mock Test: SSC JE (ME)- 6 - Question 23

The exhaust valve in a four stroke cycle petrol engine

Mock Test: SSC JE (ME)- 6 - Question 24

Diesel as compared to petrol is

Mock Test: SSC JE (ME)- 6 - Question 25

The crown of the fire box is made hemispherical in order to

Mock Test: SSC JE (ME)- 6 - Question 26

Which of the following is not the desirable property of a good fuel?

Mock Test: SSC JE (ME)- 6 - Question 27

Calorific value of gaseous fuels can be found be

Mock Test: SSC JE (ME)- 6 - Question 28

Reheating of steam under ideal condition takes place at constant

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 28

Reheating of steam under ideal condition takes place at constant temperature.In reheating type boiler-turbine plant the heat/energy transferred into the steam per kilo is higher and enthalpy loss in condenser is relatively lower (it is always constant kJ/kg).

Mock Test: SSC JE (ME)- 6 - Question 29

Atomic number of an element in the periodic table represents the numbers of

Mock Test: SSC JE (ME)- 6 - Question 30

Boiler water reactor employs

Mock Test: SSC JE (ME)- 6 - Question 31

Match List-I (Turbine types) with List-II (Flow direction) the following:

Mock Test: SSC JE (ME)- 6 - Question 32

Fire tube boilers are

Mock Test: SSC JE (ME)- 6 - Question 33

Lancashire boiler is

Mock Test: SSC JE (ME)- 6 - Question 34

The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called

Mock Test: SSC JE (ME)- 6 - Question 35

The condition of 'no slip' at boundaries is applicable to

Mock Test: SSC JE (ME)- 6 - Question 36

The fluid which obey's the Newton's law of viscosity   is called

Mock Test: SSC JE (ME)- 6 - Question 37

Bourdon gauge measures

Mock Test: SSC JE (ME)- 6 - Question 38

A curved surface is submerged in a static liquid. The horizontal component of pressure force on it is equal to

Mock Test: SSC JE (ME)- 6 - Question 39

The metacenter is

Mock Test: SSC JE (ME)- 6 - Question 40

For pipes, laminar flow occurs when Reynolds number is

Mock Test: SSC JE (ME)- 6 - Question 41

The drag coefficient of laminar flow varies with Reynolds number (Re) as

Mock Test: SSC JE (ME)- 6 - Question 42

The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called

Mock Test: SSC JE (ME)- 6 - Question 43

The liquid used in manometers should have

Mock Test: SSC JE (ME)- 6 - Question 44

If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

Mock Test: SSC JE (ME)- 6 - Question 45

A flow through a long pipe at decreasing rate is called

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 45

At a given instant in time the conditions at every point are the same, but will change with time. An example is a pipe of constant diameter connected to a pump pumping at a constant rate which is then switched off.

Mock Test: SSC JE (ME)- 6 - Question 46

The total energy of a liquid particle in motion is equal to

Mock Test: SSC JE (ME)- 6 - Question 47

Barometer is used to measure

Mock Test: SSC JE (ME)- 6 - Question 48

Rupture stress is

Mock Test: SSC JE (ME)- 6 - Question 49

The stress-strain curve for glass during tensile test would exhibit

Mock Test: SSC JE (ME)- 6 - Question 50

The number of elastic constants for a completely anisotropic elastic material are

Mock Test: SSC JE (ME)- 6 - Question 51

In terms of bulk modulus (K) and modulus of rigidity (G), the Poisson's ratio can be expressed
as

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 51

Mock Test: SSC JE (ME)- 6 - Question 52

Torsion bars are in series

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 52

If two or more shaft of different material, diameter or basic forms are connected together in such a way that each carries the same torque, then the shafts are said to be connected in series.

Mock Test: SSC JE (ME)- 6 - Question 53

The Point of contra-flexure occurs only in

Mock Test: SSC JE (ME)- 6 - Question 54

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

Mock Test: SSC JE (ME)- 6 - Question 55

A rod is enclosed centrally in a tube and the assembly is tightened by rigid washers. If the assembly is subjected to a compressive load, then

Mock Test: SSC JE (ME)- 6 - Question 56

The volumetric strain is the ratio of the

Mock Test: SSC JE (ME)- 6 - Question 57

The product of Young's modulus (E) and moment of inertia (I) is known as

Mock Test: SSC JE (ME)- 6 - Question 58

Which of the following is the correct torsion equation ?

Mock Test: SSC JE (ME)- 6 - Question 59

Match List-I with List-II:
List-I
a. Maximum normal stress theory
b. Maximum principal strain theory
c. Maximum shear stress theory
List-II
1. Mise's and Henkey's theory
2. Rankine's theory
3. St Venant's theory
4. Guest's Tresca's theory

Mock Test: SSC JE (ME)- 6 - Question 60

A machine having an efficiency greater than 50%, is known as

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 60

Reversible machine : A machine which is capable of doing work in the reverse direction even after the removal of effort ,load get lifted is called Reversible machine.

{for reversible machine efficiency will be greater than 50%}

Mock Test: SSC JE (ME)- 6 - Question 61

The coefficient of restitution for inelastic bodies is

Mock Test: SSC JE (ME)- 6 - Question 62

One joule is equal to

Mock Test: SSC JE (ME)- 6 - Question 63

The rate of doing work in known as

Mock Test: SSC JE (ME)- 6 - Question 64

Which one of the following graph represents Von-Mises yield criterion

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 64

Mock Test: SSC JE (ME)- 6 - Question 65

Which of the following joint is commonly used for pipes carrying water at low pressure

Mock Test: SSC JE (ME)- 6 - Question 66

In a gib and cotter joint, the gib and cotter are subjected to

Mock Test: SSC JE (ME)- 6 - Question 67

The endurance of fatigue limit is defined as the maximum value of the stress which a polishedstandard specimen can without failure, for infinite number of cycles, when subjected to

Mock Test: SSC JE (ME)- 6 - Question 68

Mock Test: SSC JE (ME)- 6 - Question 69

In designing thick cylinders, the equation used is

Mock Test: SSC JE (ME)- 6 - Question 70

Cast iron pipes are mainly used

Mock Test: SSC JE (ME)- 6 - Question 71

Match the List -I (Kinematic pair) with List - II (Application)

Mock Test: SSC JE (ME)- 6 - Question 72

The Grubler's criteria for planar mechanism is given by f = 3(n–1) –2I
What does I represent in the above equation?

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 72

For a simple mechanism, the degree of freedom (F) is given by Grubler’s criterion:

F = 3(n - 1) - 2l - h

where l = number of revolute joints/lower pair

h = number of higher pairs

Mock Test: SSC JE (ME)- 6 - Question 73

The instantaneous center of a slider moving in a curved surface lies

Mock Test: SSC JE (ME)- 6 - Question 74

Coriolis component of acceleration is always

Mock Test: SSC JE (ME)- 6 - Question 75

A Hooke's joint is used to connect two

Mock Test: SSC JE (ME)- 6 - Question 76

The gear train usually employed in clocks is a

Mock Test: SSC JE (ME)- 6 - Question 77

When the nature of contact between the elements of a pair is such that it can only slide relative tothe other, the pair is known as a

Mock Test: SSC JE (ME)- 6 - Question 78

The minimum periodic time of a compound pendulum is

Mock Test: SSC JE (ME)- 6 - Question 79

The height of a Watt's governor (in metres) is equal to

Mock Test: SSC JE (ME)- 6 - Question 80

A hartnell governor is a

Mock Test: SSC JE (ME)- 6 - Question 81

Which of the following materials requires highest shrinkage allowance ?

Detailed Solution for Mock Test: SSC JE (ME)- 6 - Question 81

Cast iron = 10mm/m

Steel=20mm/m

Aluminium = 15mm/m

Brass =15 mm/m

Therefore steel needs highest pattern allowance.

Mock Test: SSC JE (ME)- 6 - Question 82

Which of the following casting mould uses metal moulds ?

Mock Test: SSC JE (ME)- 6 - Question 83

Which of the following casting mould uses metal moulds ?

Mock Test: SSC JE (ME)- 6 - Question 84

Warm metal working is applied extensively for

Mock Test: SSC JE (ME)- 6 - Question 85

What does hydrostatic pressure in extrusion process improve ?

Mock Test: SSC JE (ME)- 6 - Question 86

The main source of heat generation in metal cutting is

Mock Test: SSC JE (ME)- 6 - Question 87

Size of a shaper is given by

Mock Test: SSC JE (ME)- 6 - Question 88

Which of the following is an example of orthogonal cutting ?

Mock Test: SSC JE (ME)- 6 - Question 89

Flux is used in soldering to

Mock Test: SSC JE (ME)- 6 - Question 90

The phenomenon of weld decay occurs in

Mock Test: SSC JE (ME)- 6 - Question 91

Which of the following material has maximum malleability ?

Mock Test: SSC JE (ME)- 6 - Question 92

The iron ore mostly used for the production of pig iron is

Mock Test: SSC JE (ME)- 6 - Question 93

Quenching is not necessary when hardening is done by

Mock Test: SSC JE (ME)- 6 - Question 94

Age hardening is related to

Mock Test: SSC JE (ME)- 6 - Question 95

During hot working of metals

Mock Test: SSC JE (ME)- 6 - Question 96

Cold working of metal increases

Mock Test: SSC JE (ME)- 6 - Question 97

Cores are used to

Mock Test: SSC JE (ME)- 6 - Question 98

Which of the following welding process uses nonconsumable electrodes ?

Mock Test: SSC JE (ME)- 6 - Question 99

Most of the oxy-acetylene welding is done with

Mock Test: SSC JE (ME)- 6 - Question 100

The angle made by the face of the tool and the plane parallel to the base of cutting tool is called

## Mechanical Engineering SSC JE (Technical)

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## Mechanical Engineering SSC JE (Technical)

6 videos|97 docs|55 tests