Mock Test: SSC JE (ME)- 4

# Mock Test: SSC JE (ME)- 4

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## 100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 4

Mock Test: SSC JE (ME)- 4 for Mechanical Engineering 2023 is part of Mechanical Engineering SSC JE (Technical) preparation. The Mock Test: SSC JE (ME)- 4 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Mock Test: SSC JE (ME)- 4 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)- 4 below.
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Mock Test: SSC JE (ME)- 4 - Question 1

### An insulated rigid vessel contains a mixture of fuel and air. The mixture is ignited by a minutespark. The contents of the vessel experience.

Mock Test: SSC JE (ME)- 4 - Question 2

### The specific heats of an ideal gas depend on its

Mock Test: SSC JE (ME)- 4 - Question 3

### When an ideal gas with constant specific heats is throttled adiabatically, with negligible changes in kinetic and potential energies.

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

Which of the following relationships is valid only for reversible processes undergone by a closedsystem of simple compressible substance (neglect changes in kinetic and potential energy) ?

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

Q = dU + PdV
Reversible closed system

TdS = du + Pdv

Mock Test: SSC JE (ME)- 4 - Question 5

The relationship ​ 0 holds good for

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

During the phase change of a pure substance

Mock Test: SSC JE (ME)- 4 - Question 7

At the triple point of a pure substance, the number of degrees of freedom is

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 7

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

The standard value of atmospheric pressure taken at sea level is

Mock Test: SSC JE (ME)- 4 - Question 9

For a perfect gas, according to Boyle's law

where p = Absolute pressure,
v = Volume, and
T = Absolute temperature

Mock Test: SSC JE (ME)- 4 - Question 10

When a gas is heated, change takes place in

Mock Test: SSC JE (ME)- 4 - Question 11

The general law for the expansion or compression of gases, is

Mock Test: SSC JE (ME)- 4 - Question 12

The property of working substance which increases or decreases as the heat is supplied orremoved in a reversible manner, is known as

Mock Test: SSC JE (ME)- 4 - Question 13

The use of Refrigerant R–22 for temperature below – 30º is not recommended due to its

Mock Test: SSC JE (ME)- 4 - Question 14

Global warming is caused by

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 14

Mock Test: SSC JE (ME)- 4 - Question 15

In the window air conditioner, the expansion device used is

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 15

Mock Test: SSC JE (ME)- 4 - Question 16

Bell-Coleman cycle is a

Mock Test: SSC JE (ME)- 4 - Question 17

In a reversed Brayton cycle, the heat is absorbed by the air during

Mock Test: SSC JE (ME)- 4 - Question 18

The power output from a spark ignition engine is varied by

Mock Test: SSC JE (ME)- 4 - Question 19

An air standard diesel cycle consists of

Mock Test: SSC JE (ME)- 4 - Question 20

BHP of a diesel engine can be increased by

Mock Test: SSC JE (ME)- 4 - Question 21

Alcohols are unsuitable at diesel engine fuels because

Mock Test: SSC JE (ME)- 4 - Question 22

Knocking tendency in a SI engine reduces with increasing

Mock Test: SSC JE (ME)- 4 - Question 23

​A diesel engine has

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 23

Explanation : A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways.

According to this, In diesel Engine three Valves are one for Intake Air, 2nd for Exhaust gas and 3rd is for Fuel (Injector).

Mock Test: SSC JE (ME)- 4 - Question 24

The colour of exhaust from diesel engine is generally

Mock Test: SSC JE (ME)- 4 - Question 25

A economizer in a steam generator performs the function of

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 25

Mock Test: SSC JE (ME)- 4 - Question 26

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

Mock Test: SSC JE (ME)- 4 - Question 27

In a Rankine cycle heat is added

Mock Test: SSC JE (ME)- 4 - Question 28

Boiler rating is usually defined in terms of

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 28

Mock Test: SSC JE (ME)- 4 - Question 29

In steam and other vapour cycle, the process of removing non-condensable is called

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 29

Explanation : In the steam and other vapour cycle the process of removing non-condensable gas is known as scavenging process.

Mock Test: SSC JE (ME)- 4 - Question 30

A gas turbine cycle with heat exchange and reheating improves

Mock Test: SSC JE (ME)- 4 - Question 31

A gas turbine cycle with infinitely large number of stages during compression and expansionleads to

Mock Test: SSC JE (ME)- 4 - Question 32

The high steam and low water safety valve is not used in

Mock Test: SSC JE (ME)- 4 - Question 33

The draught in locomotive boilers is produced by a

Mock Test: SSC JE (ME)- 4 - Question 34

All steam engines work on

Mock Test: SSC JE (ME)- 4 - Question 35

Naiver Stoke's equation represents the conservation of

Mock Test: SSC JE (ME)- 4 - Question 36

For the stability of a floating body, under the influence of gravity alone, which of the followingis TRUE ?

Mock Test: SSC JE (ME)- 4 - Question 37

Streamlines, path lines and streak lines are virtually identical for

Mock Test: SSC JE (ME)- 4 - Question 38

Existence of velocity potential implies that

Mock Test: SSC JE (ME)- 4 - Question 39

Steam turbines are used for

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 39

Steam turbines are used extensively in both large and small power plants to generate electrical power. Coal-fired, gas-fired, nuclear, and biomass fuels can be used to generate steam for steam turbine plants.

Mock Test: SSC JE (ME)- 4 - Question 40

Kalpan turbine is

Mock Test: SSC JE (ME)- 4 - Question 41

The pressure of a liquid measured with the help of a piezometer tube is

Mock Test: SSC JE (ME)- 4 - Question 42

A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

Mock Test: SSC JE (ME)- 4 - Question 43

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

Mock Test: SSC JE (ME)- 4 - Question 44

A pitot tube is used to measure the

Mock Test: SSC JE (ME)- 4 - Question 45

The specific speed of a turbine is given by the equation

Mock Test: SSC JE (ME)- 4 - Question 46

The specific speed of a hydraulic turbine depends upon

Mock Test: SSC JE (ME)- 4 - Question 47

The impeller of a centrifugal pump may have

Mock Test: SSC JE (ME)- 4 - Question 48

A stone of mass m at the end of a string of length l is whirled in a vertical circle at a constant speed.The tension is the string will be maximum when the stone is

Mock Test: SSC JE (ME)- 4 - Question 49

A steel wheel of 600 mm diameter on a horizontal steel rail. It carries a load of 500 N. Thecoefficient of rolling resistance is 0.3 The force in Newton, necessary to roll the wheel along therail is

Mock Test: SSC JE (ME)- 4 - Question 50

slack side in a flat belt drive is

Mock Test: SSC JE (ME)- 4 - Question 51

A 1 kg block is resting on a surface with coefficient of friction μ = 0.1. A force of 0.8 N isapplied to the block as shown in the figure. The friction force is

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 51

Mock Test: SSC JE (ME)- 4 - Question 52

A cylindrical elastic body subjected to pure torsion about its axis develops

Mock Test: SSC JE (ME)- 4 - Question 53

A rod of length L and diameter D is subjected to a tensile load P. Which of the following is sufficientto calculate the resulting change in diameter ?

Mock Test: SSC JE (ME)- 4 - Question 54

An elastic body is subjected to a tensile stress X in a particular direction and a compressive stressY in its perpendicular direction. X and Y are unequal in magnitude. On the plane of maximumshear stress in the body there will be

Mock Test: SSC JE (ME)- 4 - Question 55

In terms of Poisson's ratio (m) the ratio of Young's Modulus (E) to Shear Modulus (G) of
elastic materials is

Mock Test: SSC JE (ME)- 4 - Question 56

A long thin walled cylindrical shell, closed at both the ends, is subjected to an internal pressure.The ratio of the hoop stress (circumferential stress) to longitudinal stress developed in the shellis

Mock Test: SSC JE (ME)- 4 - Question 57

A concentrated load P acts on a simply supported beam of span L at a distance L/3 from the left
support. The bending moment at the point of application of the load is given by

Mock Test: SSC JE (ME)- 4 - Question 58

A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of the beam cross section about the neutral axis is I and the Young's modulus is E. The magnitude of the maximum deflection is

Mock Test: SSC JE (ME)- 4 - Question 59

A bolt is made to pass through a tube and both of them are tightly fitted with the help of washersand nuts. If the nut is tightened, then

Mock Test: SSC JE (ME)- 4 - Question 60

The ratio of shear modulus to the modulus of elasticity for a elasticity for a Poisson's ratio of0.4 will be

Mock Test: SSC JE (ME)- 4 - Question 61

According to Euler's column theory, the crippling load for a column of length (l) with one end fixed and the other end hinged, is

Mock Test: SSC JE (ME)- 4 - Question 62

A column with maximum equivalent length has

Mock Test: SSC JE (ME)- 4 - Question 63

The Rankine's formula holds good for

Mock Test: SSC JE (ME)- 4 - Question 64

The number of degrees of freedom of a five link planer mechanism with five revolute pairs asshown in the figure is

Mock Test: SSC JE (ME)- 4 - Question 65

For the planar mechanism shown in figure select the most appropriate choice ofr the motion oflink 2 when link 4 is moved upwards:

Mock Test: SSC JE (ME)- 4 - Question 66

The mechanism used in a shaping machine is

Mock Test: SSC JE (ME)- 4 - Question 67

When a cylinder is located in a Vee-block, the number of degrees of freedom which are arrestedis

Mock Test: SSC JE (ME)- 4 - Question 68

List -I (Gear types)
a. Worm gears
b. Cross helical gears
c. Bevel gears
d. Spur gears

List – II (Application)
1. Parallel Shafts
2. Nonparallel, intersecting shafts
3. Non parallel, nonintersecting shafts
4. Large speed ratios

Mock Test: SSC JE (ME)- 4 - Question 69

As shown in figure, a mass of 100 kg is held between two springs. The natural frequency of
vibration of the system in cycle/s, is

Mock Test: SSC JE (ME)- 4 - Question 70

Which of the following is an example of sliding pair ?

Mock Test: SSC JE (ME)- 4 - Question 71

The cam and follower is an example of

Mock Test: SSC JE (ME)- 4 - Question 72

When the two elements of a pair have a surface contact when relative motion takes place and thesurface of one element slides over the surface of the other, the pair formed is known as a

Mock Test: SSC JE (ME)- 4 - Question 73

The centre distance between two meshing involute gears is equal to

Mock Test: SSC JE (ME)- 4 - Question 74

In the design of shafts made of ductile materials subjected to twisting moment and bendingmoment, the recommended theory of failure is

Mock Test: SSC JE (ME)- 4 - Question 75

The outside diameter of a hollow shaft that is twice its inside diameter the ratio of its torquecarrying capacity to that of a solid shaft of the same material and the same outside diameter is

Mock Test: SSC JE (ME)- 4 - Question 76

Mock Test: SSC JE (ME)- 4 - Question 77

Torque to weight ratio for a circular shaft transmitting power is directly proportional to the

Mock Test: SSC JE (ME)- 4 - Question 78

Starting friction is low in

Mock Test: SSC JE (ME)- 4 - Question 79

Spherical roller bearings are normally used

Mock Test: SSC JE (ME)- 4 - Question 80

In thick film hydrodynamic journal bearings the coefficient of friction

Mock Test: SSC JE (ME)- 4 - Question 81

Riser is designed so as to

Mock Test: SSC JE (ME)- 4 - Question 82

Chills are used in moulds to

Mock Test: SSC JE (ME)- 4 - Question 83

Hot rolling of mild steel is carried out

Mock Test: SSC JE (ME)- 4 - Question 84

Match the correct combination for following metal working processes.
Processes
P. Blanking
Q. Stretch Forming
R. Coining
S. Deep Drawing
Associated state of stress
1. Tension
2. Compression
3. Shear
4. Tension and Compression
5. Tension and shear

Mock Test: SSC JE (ME)- 4 - Question 85

Wrinkling is a common defect found is

Mock Test: SSC JE (ME)- 4 - Question 86

For gas welding a particular job using a neutral oxyacetylene flame the acetylene consumptionwas 10 liters. The oxygen consumption from the cylinder in liters will be

Mock Test: SSC JE (ME)- 4 - Question 87

Preheating before welding is done to

Detailed Solution for Mock Test: SSC JE (ME)- 4 - Question 87

Explanation : The process of preheating involves heating the area around the weld joint or the entire part to a specified temperature before welding. This reduces the cooling rate of the weld and drives out moisture, which in turn helps prevent hydrogen buildup and the potential for cracking.

Mock Test: SSC JE (ME)- 4 - Question 88

The standard specification of a grinding wheel is A-46=M-6-V-21. It means a wheel of

Mock Test: SSC JE (ME)- 4 - Question 89

Cutting speed in grindning is set to a high value of

Mock Test: SSC JE (ME)- 4 - Question 90

Crater wear always starts at some distance from the tool tip because at the point

Mock Test: SSC JE (ME)- 4 - Question 91

Which of the following material has maximum ductility?

Mock Test: SSC JE (ME)- 4 - Question 92

The carbon in the pig iron varies from

Mock Test: SSC JE (ME)- 4 - Question 93

​Shock resistance of steel is increased by adding

Mock Test: SSC JE (ME)- 4 - Question 94

The bond formed by transferring electrons from one atom to another is called

Mock Test: SSC JE (ME)- 4 - Question 95

During hot working of metals

Mock Test: SSC JE (ME)- 4 - Question 96

Tubes for shaving cream and tooth paste are made by

Mock Test: SSC JE (ME)- 4 - Question 97

The rake angle required to machine brass by high speed steel tool is

Mock Test: SSC JE (ME)- 4 - Question 98

Mock Test: SSC JE (ME)- 4 - Question 99

The factor considered for evaluation of machinability is

Mock Test: SSC JE (ME)- 4 - Question 100

Chip breakers are used to

## Mechanical Engineering SSC JE (Technical)

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## Mechanical Engineering SSC JE (Technical)

6 videos|97 docs|55 tests