Mock Test: SSC JE (ME)- 13 - Mechanical Engineering MCQ

# Mock Test: SSC JE (ME)- 13 - Mechanical Engineering MCQ

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## 100 Questions MCQ Test - Mock Test: SSC JE (ME)- 13

Mock Test: SSC JE (ME)- 13 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Mock Test: SSC JE (ME)- 13 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Mock Test: SSC JE (ME)- 13 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Mock Test: SSC JE (ME)- 13 below.
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Mock Test: SSC JE (ME)- 13 - Question 1

### An adiabatic boundary is one which

Mock Test: SSC JE (ME)- 13 - Question 2

### In a quasi equilibrium process, the pressure in a system

Mock Test: SSC JE (ME)- 13 - Question 3

### The Kelvin temperature of a system can be measured by a

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

If the work done on a closed system is 20kj/kg, and 40kj/kg heat is rejected from the system, its internal energy decreases by

Mock Test: SSC JE (ME)- 13 - Question 5

If a heat engine attains 100% thermal efficiency, it violates

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

The more effective way of increasing the efficiency of a carnot engine is to

Mock Test: SSC JE (ME)- 13 - Question 7

Kelvin-plank law deals with

Mock Test: SSC JE (ME)- 13 - Question 8

First law of thermodynamics deals with

Mock Test: SSC JE (ME)- 13 - Question 9

All perfect gases change in volume by 1/273th of its original volume at 0ºC for every 1ºC change in temperature, when the pressure remains constant. This statement is called

Mock Test: SSC JE (ME)- 13 - Question 10

The absolute zero pressure can be attained at a temperature of

Mock Test: SSC JE (ME)- 13 - Question 11

The heat energy stored in the gas and used for raising the temperature of the gas is known as

Mock Test: SSC JE (ME)- 13 - Question 12

When a gas is heated at constant pressure

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

The capacity of refrigerating machine is expressed as

Mock Test: SSC JE (ME)- 13 - Question 14

One tonnes of refrigeration is equal to

Mock Test: SSC JE (ME)- 13 - Question 15

COP of a carnot heat pump operating between –3ºC and 27ºC is

Mock Test: SSC JE (ME)- 13 - Question 16

Oil separator in a refrigeration cycle is installed.

Mock Test: SSC JE (ME)- 13 - Question 17

In electrolux refrigerator

Mock Test: SSC JE (ME)- 13 - Question 18

The intake charge in a diesel engine consists of

Mock Test: SSC JE (ME)- 13 - Question 19

All of followings are correct except: Inlet -valve mach index is dependent on

Mock Test: SSC JE (ME)- 13 - Question 20

When crude oil is heated, then which one of the following hydrocarbon is given off first ?

Mock Test: SSC JE (ME)- 13 - Question 21

Octane number of natural gas is

Mock Test: SSC JE (ME)- 13 - Question 22

The air-fuel ratio of the petrol engine is controlled by

Mock Test: SSC JE (ME)- 13 - Question 23

In a four stroke cycle petrol engine, the charge is ignited at

Mock Test: SSC JE (ME)- 13 - Question 24

In a four stroke cycle , the minimum temperature inside the engine cylinder occurs at the

Mock Test: SSC JE (ME)- 13 - Question 25

The fuel mostly used in boilers is

Mock Test: SSC JE (ME)- 13 - Question 26

The incomplete combustion is indicated by the presence of

Mock Test: SSC JE (ME)- 13 - Question 27

The diameter of the cylindrical shell of a Lancashire boiler is about

Mock Test: SSC JE (ME)- 13 - Question 28

The function of an economizer in a steam power plant is to

Mock Test: SSC JE (ME)- 13 - Question 29

Match List-I (Boiler) with List-II and select the correct answer using the codes given below the
lists:

Mock Test: SSC JE (ME)- 13 - Question 30

The basic raw material of the nuclear power plant is

Mock Test: SSC JE (ME)- 13 - Question 31

Steam coal is

Mock Test: SSC JE (ME)- 13 - Question 32

The fittings mounted on the boiler for its proper and safe functioning is a

Mock Test: SSC JE (ME)- 13 - Question 33

An economiser is generally placed between

Mock Test: SSC JE (ME)- 13 - Question 34

The draught may be produced by a

Mock Test: SSC JE (ME)- 13 - Question 35

The velocity distribution in a viscous flow over a plate is given by

u = 4y – y2

where, u = velocity in m/s at a point distanty fromthe plate. If the coefficient of dynamic viscosityis 1.5 pa.s, What is the shear stress at y = 1m?

Mock Test: SSC JE (ME)- 13 - Question 36

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle
q, sensitivity of inclined tube to sensitivity of U– tube equal to

Mock Test: SSC JE (ME)- 13 - Question 37

The centre of pressure of a surface subject to fluid pressure is the point

Mock Test: SSC JE (ME)- 13 - Question 38

Match List - I withList -II and select the correct
answer using the codes given below the lists:
List-I
a. Stream line
b. Streak line
c. Path line
d. Equipotential lines
List-II
1. Tracing of motion of any fluid particle
2. Tracing of motion of different fluid particles
3. Identification of location of number of fluid
particles
4. Orthogonal to streak lines
5. Location of equal piezometric head

Mock Test: SSC JE (ME)- 13 - Question 39

How is the metacentric height (GM) expressed

Where I =Moment of inertia of the plan of the floating body at the water surface
V=Volume of the body submerged in water
BG =Distance between the center of gravity (G) and the center of Buoyancy (B)

Mock Test: SSC JE (ME)- 13 - Question 40

A type of flow in which the fluid particle while moving in the direction of flow rotates about their centre is known as

Mock Test: SSC JE (ME)- 13 - Question 41

The length of divergent part of venturimeter in comparision to convergent portion is

Mock Test: SSC JE (ME)- 13 - Question 42

The absolute pressure is equal to

Mock Test: SSC JE (ME)- 13 - Question 43

A vertically immersed surface is shown in fig. The distance of its centre of pressure from the water surface is

Mock Test: SSC JE (ME)- 13 - Question 44

Bernoulli's equation is applied to

Detailed Solution for Mock Test: SSC JE (ME)- 13 - Question 44

Bernoulli's equation is applicable to venturimeter, orifice meter and pitit tube.

Mock Test: SSC JE (ME)- 13 - Question 45

The discharge over a rectangular weir, considering the velocity of approach, is

where H1 =Total height of water above the weir = H + Ha
H=Height of water, over the crest of the weir, and
Ha =Height of water, due to velocity of approach

Mock Test: SSC JE (ME)- 13 - Question 46

In an inward flow reaction turbine

Mock Test: SSC JE (ME)- 13 - Question 47

The flow ratio in case of Francis turbine varies from

Mock Test: SSC JE (ME)- 13 - Question 48

The loss of strength in compression due to overloading is known is as

Mock Test: SSC JE (ME)- 13 - Question 49

The following figure shows the stress-strain curve for tensile test on a mild steel specimen.