# Mock Test: SSC JE (ME)- 14

## 100 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Mock Test: SSC JE (ME)- 14

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Attempt Mock Test: SSC JE (ME)- 14 | 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

### A carnot engine operates between 27ºC and 327ºC. If the engine produces 300 kj of work,what is the entropy change during heat addition ?

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QUESTION: 4

Three engines A, B and Coperating on Argon, Oxygen and Air respectively. Which engine will have higher efficiency ?

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QUESTION: 5

At critical point the enthalpy of vaporization is

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QUESTION: 6

Increase in entropy of a system represents

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QUESTION: 7

The knocking tendency in compression ignition engines increase with

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In SI engineknocking tendency increases with increase in compression ratio. In CI engineknocking tendency decreases with increase in compression ratio and vice versa. If compression ratio is low in CI engine, there will not be enough temperature generation for ignition of the fuel air mixture.

QUESTION: 8

The cetane number of automotive diesel fuel used in India is in which one of the following ranges ?

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QUESTION: 9

The delay period in CI engine depends upon which of the following ?

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QUESTION: 10

What is the cause of reheat factor in a steam turbine ?

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QUESTION: 11

Blade erosion in steam turbines takes place

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QUESTION: 12

Mobility of statically indeterminate structure is

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QUESTION: 13

The path of contact in involute gears is

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QUESTION: 14

Mitre gears are used for

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QUESTION: 15

Bevel gears have their teeth

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QUESTION: 16

Which one of the following governor is widely used in Gramophone

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QUESTION: 17

Which of the following are antifriction bearing

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QUESTION: 18

Bearing used for heavy loads are

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QUESTION: 19

Hydrostatic law of pressure is given as

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QUESTION: 20

A 70 kg person walks on snow with a total foot implant area of 500 cm2. What pressure doeshe exert on snow ?

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QUESTION: 21

The centre of buoyancy is

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QUESTION: 22

During floods, water entered an office having wooden tables. The position of tables, if floating,will be

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QUESTION: 23

While using boundary layer equations, Bernoulli's equation

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QUESTION: 24

The Euler's equation of motion is a statement of

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QUESTION: 25

Which one of the following is measured by a rotameter ?

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QUESTION: 26

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

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QUESTION: 27

The number of elastic constant for a orthotropic material are

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QUESTION: 28

What is the relationship between the linear elastic properties young's modulus (E), rigidity modulus (G) and bulk modulus (K) ?

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QUESTION: 29

Slenderness ratio is defined as the ratio of

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QUESTION: 30

The slenderness ratio of a section is

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QUESTION: 31

Euler's formula holds good only for

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QUESTION: 32

A thin cylindrical shell of diameter d, length L and thickness t is subjectd to an internal pressure
p. What is the ratio of longitudinal strain to hoop strain in terms of Poission's ratio (1/m) ?

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QUESTION: 33

The volumetric strain in case of a thin cylindrical shell of diameter d, thickness t, subjected to
internal pressure p is

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QUESTION: 34

The correct sequence of elements of 18-4=1 HSS tool is

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QUESTION: 35

In relation VTn = C, the value of n, for ceramic tools

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QUESTION: 36

Ceramic cutting tool chip are fixed to the tool body by

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QUESTION: 37

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QUESTION: 38

Generally the value of point angle of a drill is

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QUESTION: 39

The different speeds on lathe are provided in

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QUESTION: 40

The two parts of a sand casting mould are called

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QUESTION: 41

Fluidity is greatly influenced by

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QUESTION: 42

In D.C. reverse polarity arc welding

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QUESTION: 43

In which of the following welding techniques in vacuum environment required

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QUESTION: 44

Which one of the following welding processes consists of minimum heat affected zone

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QUESTION: 45

Which one of the following is not an electric resistance method of welding

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QUESTION: 46

A medium carbon steel workpiece is turned on a lath at 50 m/ min cutting speed, 0.8 mm/ revfeed and 1.5 mm depth of cut, what is the rate of metal removal

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QUESTION: 47

In a typical metal cutting operation, using a cutting tool of positive rake a = 10º. It was observed that the shear angle was 20º the friction angle is

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QUESTION: 48

Primary tool force used in calculating the total power consumption in machining is

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QUESTION: 49

When the molten metal is poured in a mould, it may pass through the following items in sequence

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QUESTION: 50

A trepanning tool is used on

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QUESTION: 51

In solidification of metal during casting, compensation for solid contraction is

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QUESTION: 52

When trying to turn a key into a lock, following is applied

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QUESTION: 53

Properties of substances like pressure, temperature and density , in thermodynamic coordinates are

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QUESTION: 54

A perpetual motion machine is

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QUESTION: 55

Air refrigerators work on

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QUESTION: 56

Second law of thermodynamics defines

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QUESTION: 57

An isentropic process on T-S diagram is represented by a

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QUESTION: 58

The area under curve on T-S diagram represents the

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QUESTION: 59

Dynamic viscosity (m) has the dimensions as

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QUESTION: 60

The co-efficient of discharge (Cd) in terms of Cv and Cc is

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QUESTION: 61

For viscous flow between two parallel plates, the pressure drop per unit length is equal to

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QUESTION: 62

Total energy line (T.E.L) represents the sum of

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QUESTION: 63

Hydraulic gradient line (H.G. L.) represents the sum of

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QUESTION: 64

The loss of head due to sudden contraction of a pipe is equal to

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QUESTION: 65

The property of a material by virtue of which a body returns to its original shape after removal of the load is called

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QUESTION: 66

The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to

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QUESTION: 67

The dimension of young's modulus of elasticity is given by

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QUESTION: 68

Match the items in columns I and II Solution:
QUESTION: 69

There are two points P and Q on a planar rigid body. The relative velocity between the two points

Solution:  QUESTION: 70

In the figure shown, the relative velocity of link 1 with respect of link 2 is 12m/ sec. Link 2 rotates at a constant speed of 120 rpm. The magnitude of Coriolis component of acceleration of link 1 is Solution:
QUESTION: 71

Axial thrust is minimum in case of

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QUESTION: 72

Gearing contact is which one of the following ?

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QUESTION: 73

If the two pulleys in a belt drive have different values of coefficient of friction, then the design will be based on the pulley for which

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QUESTION: 74

Alloy containing Tin is

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QUESTION: 75

The ductility of a material with work hardening

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QUESTION: 76

Which among the following is slowest speed operation in lathe

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QUESTION: 77

Soft materials can not be economically grinded due to

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QUESTION: 78

Feed rate in milling operation is expressed as

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QUESTION: 79

The machining process which makes a stepped cylindrical recess at the top of a hole to accommodate bolt head is called

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QUESTION: 80

Internal and external threads of different pitches can be produced by

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QUESTION: 81

The casting defect which is not caused by the high pouring temperature of melt is

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QUESTION: 82

The impurities in true centrifugal casting

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QUESTION: 83

In a gas welding of mild steel using an neutral flame the total amount of acetylene consurmed is 10 litre. the oxygen consumption is

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QUESTION: 84

Pinch effect in welding is the result of

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QUESTION: 85

The maximum heat in resistance welding is at the

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QUESTION: 86

If a i is the rake angle of the cutting tool f is the shear angle and V is the cutting velocity, velocity of chip sliding along the shear plane is given by

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QUESTION: 87

The size of inlet valve of an engine in comparison to exhaust valve is

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QUESTION: 88

The domestic refrigerator uses following type of compressor

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QUESTION: 89

The adiabatic equation of a perfect gas is

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QUESTION: 90

The forces which meet at one point, but their lies of action do not lie in a plane are called

Solution:

Concurrent Non coplanar forces

Ø In this system, all forces do not lie in the same plane, but their line of action passes through a single point ( O ).

Ø  Any two forces of a concurrent force system determine a plane, their resultant is determined by parallelogram law. QUESTION: 91

A perfact gas

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QUESTION: 92

The buoyancy depends on

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QUESTION: 93

Euler's dimensionless number relates the following

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QUESTION: 94

Liquids transmit pressure equally in all the directions. This is according to

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QUESTION: 95

Centre of pressure compared to c.g. is

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QUESTION: 96

Flow of water in a pipe about 3 metres in diameter can be measured by

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QUESTION: 97

The equation of continuity of flow is based on the principle of conservation of

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QUESTION: 98

The length of divergent portion of ventrumeter in comparison to convergent portion is

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QUESTION: 99

The intensity of stress which causes unit strain is called

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QUESTION: 100

True stress- strain curve for materials is plotted between

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