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Elements of Mechanical Engineering
(2110006)
Winter 2015 Sem-1
MCQ(s) of
Elements of Mechanical Engineering
(2110006)
- Winter 2015 Sem-1
Q.
1
Prime mover is a device which converts natural resources into ____________ energy.
(A) With decrease in pressure
(B) with increase in pressure
(C) is unaffected by pressure
(D) none of the above
Answer
(D)
none of the above
Q.
2
Zeroth law of thermodynamics forms the basis of measurement of the following.
(A) heat exchange
(B) work
(C) pressure
(D) Temperature
Answer
(D)
Temperature
Q.
3
Polytropic expansion of a gas is given by the law
(A) pV
n
= C
(B) pV
γ
= C
(C) pV = C
(D) pV
o
= C
Answer
(A)
pV
n
= C
Q.
4
Behaviour of vapour can be determined by
(A) Boyles law
(B) Charles law
(C) Combined law
(D) none of the above
Answer
(D)
none of the above
Q.
5
Bucket pump is a type of ___________ pump.
(A) rotary
(B) Centrifugal
(C) reciprocating
(D) axial
Answer
(C)
reciprocating
Q.
6
Centrifugal compressor is suitable for producing?
(A) High pressure
(B) medium pressure
(C) low pressure
(D) all of the above
Answer
(C)
low pressure
Q.
7
Spur gear has teeth__________to the axes of the gears.
(A) inclined
(B) parallel
(C) perpendicular
(D) any of the above
Answer
(B)
parallel
Q.
8
The energy absorbed by brakes is released in surrounding in form of
(A) heat energy
(B) kinetic energy
(C) potential energy
(D) pressure energy
Answer
(A)
heat energy
Q.
9
Which engine produces more power for same compression ratio
(A) 4- stroke diesel engine
(B) 4- stroke petrol engine
(C) 2- stroke diesel engine
(D) 2- stroke petrol engine
Answer
(D)
2- stroke petrol engine
Q.
10
The operation of filling passage ways with liquid from outside source before starting pumps is known as____________.
(A) cavitation
(B) cleaning
(C) priming
(D) chocking
Answer
(C)
priming
Q.
11
One ton of refrigeration is equal to
(A) 221 kJ/min
(B) 420 kJ/min
(C) 600 kJ/min
(D) 210 kJ/min
Answer
(D)
210 kJ/min
Q.
12
Belt drive provides_____________flexibilty compared to gear drive.
(A) more
(B) less
(C) same
(D) can’t say
Answer
(A)
more
Q.
13
Which of the following elements is used to connect two shafts____
(A) clutch
(B) brakes
(C) Couplings
(D) none of above
Answer
(C)
Couplings
Q.
14
____________ is the characteristic of cast iron.
(A) ductile
(B) malleable
(C) very brittle
(D) all of the above
Answer
(C)
very brittle