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Test: Mechanical Engineering- 2

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

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This mock test of Test: Mechanical Engineering- 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 100 Multiple Choice Questions for Mechanical Engineering Test: Mechanical Engineering- 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Mechanical Engineering- 2 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Mechanical Engineering- 2 exercise for a better result in the exam. You can find other Test: Mechanical Engineering- 2 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.

QUESTION: 1

Match the List-I (Terms) with List-II (Description) and select the correct answer:

A.
A
B.
B
C.
C
D.
D

Solution:

QUESTION: 2

Select the correct statement among the given statements?

A.
One class could implement only one interface
B.
Properties could be declared inside an interface
C.
Interfaces cannot be inherited
D.
None of the mentioned

Solution:

QUESTION: 3

The fundamental unit of enthalpy is

A.
MLT–²
B.
ML²T–¹
C.
ML²T–²
D.
ML³T–²

Solution:

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

A.
Zeroth law of thermodynamics
B.
First law of thermodynamics
C.
Second law of thermodynamics
D.
Third law of thermodynamics

Solution:

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?

A.
9 kJ
B.
10 kJ
C.
11 kJ
D.
12 kJ

Solution:

QUESTION: 6

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

A.
200 kJ
B.
1200 kJ
C.
0 kJ
D.
1000 kJ

Solution:

QUESTION: 7

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

A.
triple point
B.
critical point
C.
super heated point
D.
compressed liquid point

Solution:

QUESTION: 8

The heating of a gas at constant pressure is governed by

A.
Boyle's law
B.
Charles' law
C.
Gay-Lussac law
D.
Avogadro's law

Solution:

QUESTION: 9

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

A.
isothermal process
B.
hyperbolic process
C.
adiabatic process
D.
polytropic process

Solution:

QUESTION: 10

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

A.
adiabatic process
B.
constant volume process
C.
constant pressure process
D.
isothermal process

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

A.
B.
C.
D.
none of these

Solution:

QUESTION: 12

The main cause for the irreversibility is

A.
mechanical and fluid friction
B.
unrestricted expansion
C.
heat transfer with a finite temperature difference
D.
all of the above

Solution:

QUESTION: 13

The coefficient of performance of a domestic refrigerator is

A.
less than 1
B.
more than 1
C.
equal to 1
D.
dependent upon the mass of the refrigerant

Solution:

QUESTION: 14

The thermodynamic cycle used in aircraft refrigeration is

A.
Reversed Carnot
B.
Reversed Brayton
C.
Vapour Compression cycle
D.
Reversed Stirling

Solution:

QUESTION: 15

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

A.
red smoke
B.
blue smoke
C.
white smoke
D.
black smoke

Solution:

QUESTION: 16

Carbon dioxide is

A.
colourless
B.
odourless
C.
non-flammable
D.
all of these

Solution:

QUESTION: 17

The heat rejection factor (HRF) is given by

A.
1 + C.O.P
B.
1-C.O.P
C.
D.

Solution:

QUESTION: 18

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

A.
Cylinder block
B.
inlet and exhaust valves
C.
piston
D.
connecting rod

Solution:

QUESTION: 19

Piston compression rings are made of

A.
cast iron
B.
bronze
C.
aluminium
D.
white metal

Solution:

QUESTION: 20

For the same compression ratio and heat rejection

Solution:

QUESTION: 21

The most preferred type of carburettor is

A.
concentric
B.
eccentric
C.
horizontal
D.
vertical

Solution:

QUESTION: 22

The phenomenon of pre-ignition

A.
always occurs in diesel engines
B.
never occurs in diesel engines
C.
always occurs in petrol engines
D.
increases the power output engines

Solution:

QUESTION: 23

The first nuclear power plant in India was located at

A.
Kota
B.
Tarapur
C.
Bareilly
D.
none of these

Solution:

QUESTION: 24

The primary fuel used in nuclear power plants is

A.
U₂₃₅
B.
U₂₃₈
C.
Pu₂₃₉
D.
Pu₂₃₃

Solution:

QUESTION: 25

Hard coke is used in

A.
cement industry
B.
thermal power plant
C.
domestic use
D.
blast furnace

Solution:

QUESTION: 26

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

A.
externally fired
B.
horizontal placement
C.
multi-tubular
D.
mobile unit

Solution:

QUESTION: 27

Fusible plug is fitted in a boiler to

A.
prevent leakage of steam from boiler
B.
keep the boiler pressure within prescribed limits
C.
extinguish the fire in case of low water level
D.
allow passage of only superheated steam from boiler

Solution:

QUESTION: 28

The basic purpose of boiler drum is to

A.
remove salt from the water
B.
serve as storage of steam
C.
serve as storage of feed water
D.
separate steam from water

Solution:

QUESTION: 29

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

A.
A
B.
B
C.
C
D.
D

Solution:

QUESTION: 30

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

A.
protons and neutrons in an atom
B.
protons and electrons in an atom
C.
neutrons and electrons in an atom
D.
protons and neutrons in a nucleus

Solution:

QUESTION: 31

The must commonly used moderator in nuclear power plant is

A.
heavy water
B.
concrete and brick
C.
steel
D.
graphite

Solution:

QUESTION: 32

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

A.
one
B.
two
C.
three
D.
four

Solution:

QUESTION: 33

A safety valve usually employed with stationary boilers is

A.
lever safety valve
B.
dead weight safety valve
C.
high steam and low water safety valve
D.
all of these

Solution:

QUESTION: 34

An economiser is installed in a boiler primarily to

A.
superheat the steam
B.
reduce fuel consumption
C.
increase steam pressure
D.
all of these

Solution:

QUESTION: 35

A perfect fluid is

A.
a real fluid
B.
the one which obeys perfect gas laws
C.
compressive and gaseous
D.
incompressible and frictionless

Solution:

QUESTION: 36

Surface tension is due to

A.
viscous forces
B.
cohesion
C.
adhesion
D.
the difference between cohesion and adhesion

Solution:

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

A.
A
B.
B
C.
C
D.
D

Solution:

QUESTION: 38

Fluid is a substance which offers no resistance to change of

A.
Volume
B.
Pressure
C.
shape
D.
Flow

Solution:

QUESTION: 39

Normal depth in open channel flow is

A.
the depth measured normal to the channel bed
B.
the depth of flow in the channel corresponding to uniform flow
C.
the depth of flow in the channel corresponding to steady flow
D.
vertical distance between the bed of the channel to the free liquid surface

Solution:

Save & Add Question

QUESTION: 40

The hydraulic jump results when

A.
the flow is in a steep channel
B.
the flow is an adverse channel
C.
the flow is increased in the given channel
D.
the bed slope changes from steep to mild

Solution:

QUESTION: 41

The equation of motion for a viscous fluid known as

A.
Euler's equation
B.
Reynolds equation
C.
Navier stoke equation
D.
Hagen poiseuille equation

Solution:

QUESTION: 42

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

A.
atmospheric pressure
B.
gauge pressure
C.
absolute pressure
D.
mean pressure

Solution:

QUESTION: 43

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

Here H1 is the difference in elevation between

A.
the upstream water and the energy line
B.
the energy line and the weir crest
C.
the water surface and the weir crest
D.
the water surface and the bottom of channel

Solution:

QUESTION: 44

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

A.
The bodies A and B have equal stability
B.
The body A is more stable than body B
C.
The body B is more stable than body A
D.
The bodies A and B are unstable

Solution:

QUESTION: 45

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

Solution:

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

A.
volumetric stress and volumetric strain
B.
lateral stress and lateral strain
C.
longitudinal stress and lateral strain
D.
longitudinal stress and longitudinal strain

Solution:

QUESTION: 49

Flow stress corresponds to

A.
fluids in motion
B.
breaking point
C.
plastic deformation of solids
D.
rupture stress

Solution:

QUESTION: 50

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

A.
2, 3, 1, 4
B.
2, 1, 3, 4
C.
1, 3, 2, 4
D.
1, 2, 3, 4

Solution:

QUESTION: 51

Creep is the gradual increase of

A.
plastic strain with time at constant load
B.
elastic strain with time at constant load
C.
plastic strain with time at varying load
D.
elastic strain with time at varying load

Solution:

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

Solution:

QUESTION: 53

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

A.
t1 = t3 and t2 = t4
B.
t1 = t4 and t2 = t3
C.
t1 = 2t4 and t2 = 2t3
D.
t1 = t2 and t3 = t4

Solution:

QUESTION: 54

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

A.
10 MPa
B.
30 MPa
C.
50 MPa
D.
100 MPa

Solution:

QUESTION: 55

The ratio of linear stress to the linear strain is called

A.
modulus of rigidity
B.
modulus of elasticity
C.
bulk modulus
D.
poisson's ratio

Solution:

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

A.
wl/6
B.
wl/3
C.
wl
D.
2wl/3

Solution:

QUESTION: 57

The point of contra flexure is a point where

A.
shear force changes sign
B.
bending moment changes sign
C.
shear force is maximum
D.
bending moment is maximum

Solution:

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

Solution:

QUESTION: 60

The rate of change of displacement of a body is called

A.
velocity
B.
acceleration
C.
momentum
D.
none of these

Solution:

QUESTION: 61

The law of motion involved in the recoil of gun is

A.
Newton's first law of motion
B.
Newton's second law of motion
C.
Newton's third law of motion
D.
none of these

Solution:

QUESTION: 62

The motion of a wheel of a car is

A.
purely translation
B.
purely rotational
C.
combined translation and rotational
D.
none of these

Solution:

QUESTION: 63

The wheels of a moving car possess

A.
potential energy only
B.
kinetic energy of translation only
C.
kinetic energy of rotation only
D.
kinetic energy of translation and rotation both

Solution:

QUESTION: 64

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

A.
endurance limit
B.
ultimate tensile strength
C.
elastic modulus
D.
yield stress

Solution:

QUESTION: 65

consider the following figure and match the following

A.
A
B.
B
C.
C
D.
B

Solution:

QUESTION: 66

Resistance to fatigue of a material is measured by

A.
Young's modulus
B.
Endurance limit
C.
Ultimate tensile strength
D.
Coefficient of elasticity

Solution:

QUESTION: 67

The bending stress in a curved beam is

A.
zero at the centroidal axis
B.
zero at the point other than centroidal axis
C.
maximum at the neutral axis
D.
none of these

Solution:

QUESTION: 68

Stress concentration is caused due to

A.
variations in load acting on a member
B.
variations in properties of materials in a member
C.
abrupt change of cross-section
D.
all of these

Solution:

QUESTION: 69

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

A.
equal to 1/10
B.
less than 1/10
C.
greater than 1/ 10
D.
none of these

Solution:

QUESTION: 70

Crushing resistance required to crush the rivet per pitch length is

A.
p.d.σ_c
B.
p.t.σ_c
C.
n.d.t.σ_c
D.
(p – d) t.σ_c

Solution:

QUESTION: 71

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

A.
space centrode
B.
body centrode
C.
moving centrode
D.
none of these

Solution:

QUESTION: 72

A universal joint is an example of

A.
lower pair
B.
higher pair
C.
rolling pair
D.
sliding pair

Solution:

QUESTION: 73

The product of diametral pitch and circular pitch is

A.
π
B.
Zero
C.
One
D.
1/2

Solution:

QUESTION: 74

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

A.
torque-crank angle diagram
B.
acceleration - crank angle diagram
C.
speed-space diagram
D.
speed- energy diagram

Solution:

QUESTION: 75

The condition of isochronisms can be realized in a

A.
Watt governor
B.
Porter governor
C.
Proell governor
D.
Hartnell governor

Solution:

QUESTION: 76

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

A.
Straight line
B.
hyperbolic path
C.
parabolic path
D.
elliptical path

Solution:

QUESTION: 77

Which of the following statement is wrong?

A.
A round bar in a round hole form a turning pair.
B.
A square bar in a square hole form a sliding pair.
C.
A vertical shaft in a foot step bearing forms a successful constraint.
D.
all of the abo

Solution:

QUESTION: 78

An exact straight line motion mechanism is a

A.
Scott-Russell's mechanism
B.
Hart's mechanism
C.
Peaucellier's mechanism
D.
all of these

Solution:

QUESTION: 79

The contact ratio is given by

Solution:

QUESTION: 80

The cam follower generally used in automobile engines is

A.
knife edge follower
B.
Flat faced follower
C.
spherical faced follower
D.
roller follower

Solution:

QUESTION: 81

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

A.
Aluminium
B.
Magnesium
C.
Copper
D.
All of the above

Solution:

QUESTION: 82

The casting defect caused by the erosion of sand

A.
Drop
B.
Wash
C.
Rat tail
D.
Misrun

Solution:

QUESTION: 83

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

A.
continuous chips
B.
discontinuous chips
C.
fine chips
D.
continuous chips with built-up edge

Solution:

QUESTION: 84

A milling cutter has the following number of cutting edges.

A.
One
B.
Two
C.
Three
D.
Multiple

Solution:

QUESTION: 85

Oxyacetylene flame cuts metal by its

A.
Evaporation
B.
Oxidation
C.
Burning
D.
Intensive oxidation

Solution:

QUESTION: 86

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

A.
A
B.
B
C.
C
D.
D

Solution:

QUESTION: 87

In a centrifugal casting method

A.
core is made of sand
B.
core is made of ferrous metal
C.
core is made of non-ferrous metal
D.
no core is used

Solution:

QUESTION: 88

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

A.
shearing
B.
piercing
C.
punching
D.
blanking

Solution:

QUESTION: 89

Spot welding is used for welding

A.
lap joints in plates having 0.025 mm to 1.245 mm thickness
B.
lap joints in plates having thickness above 3 mm
C.
butt joints in plates having 0.025 mm to 1.25 mm thickness
D.
butt joints in plates having thickness above 3 mm

Solution:

QUESTION: 90

Thermit welding is often used in

A.
replacing broken gear teeth
B.
repairing broken shears
C.
joining rails, truck frames and locomotive frames etc.
D.
all of the above

Solution:

QUESTION: 91

Neutral flame is use to weld

A.
steel
B.
cast iron
C.
copper
D.
all of these

Solution:

QUESTION: 92

An oxidising process used for aluminium and magnesium articles is called

A.
galvanising
B.
anodising
C.
parkerising
D.
sheradising

Solution:

QUESTION: 93

Drilling is an example of

A.
orthogonal cutting
B.
oblique cutting
C.
simple cutting
D.
uniform cutting

Solution:

QUESTION: 94

A twist drill is a

A.
side cutting tool
B.
front cutting tool
C.
end cutting tool
D.
none of these

Solution:

QUESTION: 95

Twist drills are made of

A.
high speed steel
B.
carbon steel
C.
stainless steel
D.
either (a) or (b)

Solution:

QUESTION: 96

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

A.
boring
B.
drilling
C.
reaming
D.
internal turning

Solution:

QUESTION: 97

The operation performed on a shaper is

A.
machining horizontal surface
B.
machining vertical surface
C.
machining angular surface
D.
all of these

Solution:

QUESTION: 98

The operation performed on a shaper is

A.
machining horizontal surface
B.
machining vertical surface
C.
machining angular surface
D.
all of these

Solution:

QUESTION: 99

The hardness of a grinding wheels is specified by

A.
Brinell hardness number
B.
Rockwell hardnees number
C.
Vickers pyramid number
D.
letter of alphabet

Solution:

QUESTION: 100

The soft grade grinding wheels are denoted by the letters

A.
A to H
B.
I to P
C.
Q to Z
D.
A to P

Solution:

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

Match the List-I (Terms) with List-II (Description) and select the correct answer:

Select the correct statement among the given statements?

The fundamental unit of enthalpy is

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