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Elements of Mechanical Engineering
(2110006)
Summer 2017 Sem-2
MCQ(s) of
Elements of Mechanical Engineering
(2110006)
- Summer 2017 Sem-2
Q.
1
In an isolated system, what transfer?
(A) mass
(B) energy
(C) both mass and energy
(D) neither mass nor energy
Answer
(D)
neither mass nor energy
Q.
2
Which of the following is a path function?
(A) heat
(B) temperature
(C) pressure
(D) volume
Answer
(A)
heat
Q.
3
Which has the highest calorific value?
(A) Petrol
(B) Diesel oil
(C) Alcohol
(D) Benzene
Answer
(A)
Petrol
Q.
4
Choose the incorrect relationship.
(A) C
P
+ C
V
= R
(B) C
P
- C
V
= R
(C)
γ
=
C
P
/
C
V
(D)
C
V
=
R
/
(
γ
-
1
)
Answer
(A)
C
P
+ C
V
= R
Q.
5
Steam coming out of the whistle of pressure cooker is
(A) Dry and saturated vapour
(B) Wet vapour
(C) Superheated vapour
(D) Ideal gas
Answer
(C)
Superheated vapour
Q.
6
Superheating of steam is done at constant
(A) pressure
(B) volume
(C) temperature
(D) enthalpy
Answer
(A)
pressure
Q.
7
The Otto cycle is also known as
(A) constant pressure cycle
(B) constant volume cycle
(C) constant temperature cycle
(D) constant enthalpy cycle
Answer
(B)
constant volume cycle
Q.
8
When heat is added to the water and if its temperature does not change, the heat added is called
(A) latent heat
(B) isothermal heat
(C) sensible heat
(D) constant pressure heat
Answer
(A)
latent heat
Q.
9
Which one of the following is vertical boiler?
(A) Lancashire
(B) Cochran
(C) Cornish
(D) Locomotive
Answer
(B)
Cochran
Q.
10
Petrol engine work on ________system.
(A) either spark or compression ignition
(B) spark ignition
(C) compression ignition
(D) all of the above
Answer
(B)
spark ignition
Q.
11
Scroll compressor is a ______________compressor.
(A) reciprocating
(B) rotary
(C) dynamic
(D) radial
Answer
(B)
rotary
Q.
12
Pump cannot be driven by
(A) electric motor
(B) I.C. Engine
(C) steam turbine
(D) compressor
Answer
(D)
compressor
Q.
13
Performance parameter for refrigeration system is known as
(A) efficiency
(B) COP
(C) effectiveness
(D) energy ratio
Answer
(B)
COP
Q.
14
In VCR cycle, refrigeration effect is produced by
(A) compressor
(B) condenser
(C) expander
(D) evaporator
Answer
(D)
evaporator