MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Mechanical Engineering
Internal Combustion Engines (Ic Engine)
Quiz 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Q.1
Nuclear reactors are used
to produce heat for thermoelectric power
to produce fissionable material
to propel ships, submarines, aircrafts
all of these
Q.2
The exhaust valve in a four stroke cycle petrol engine
opens at 50° before bottom dead centre and closes at 15° after top dead centre
opens at bottom dead centre and closes at top dead centre
opens at 50° after bottom dead centre and closes at 15° before top dead centre
may open and close anywhere
Q.3
The predominent isotope of the naturally occuring element is
U235
U238
Pu233
Pu239
Q.4
A moderator generally used in nuclear power plants is
graphite
heavy water
concrete
graphite and concrete
Q.5
The primary fuel used in nuclear power plants is
U235
U238
Pu239
Pu233
Q.6
In a four stroke cycle petrol engine, the compression
Starts at 40° after bottom dead centre and ends at 30° before top dead centre
Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre
Starts at bottom dead centre and ends at top dead centre
May start and end anywhere
Q.7
In compression ignition engines, swirl denotes a
Haphazard motion of the gases in the chamber
Rotary motion of the gases in the chamber
Radial motion of the gases in the chamber
None of the above
Q.8
Fuel oil consumption guarantees for I .C. engine are usually based on
Low heat value of oil
High heat value of oil
Net calorific value of oil
Calorific value of fuel
Q.9
The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be
Higher
Lower
Remain unaffected
None of the above
Q.10
In diesel engines, the fuel is injected in the form of very fine spray, into the engine cylinder, which gets ignited due to high temperature of the compressed air.
Agree
Disagree
Q.11
Pre-ignition is caused by the spontantaneous combustion of the mixture before the end of the compression stroke, and is due to
cylinder walls being too hot
overheated spark plug points
red hot carbon deposits on cylinder walls
any one of these
Q.12
The expansion of fuel in a four stroke cycle diesel engine
starts at 15° before top dead centre and ends at 30° after top dead centre
starts at top dead centre and ends at 30° after top dead centre
starts at 15° after top dead centre and ends at 30° before bottom dead centre
may start and end anywhere
Q.13
In a diesel engine, the duration between the time of injection and ignition, is known as
pre-ignition period
delay period
period of ignition
burning period
Q.14
Reactors for propulsion applications are designed for
any form of uranium
natura uranium
enriched uranium
plutonium
Q.15
In open combustion chamber in diesel engines, the shape and layout of the piston crown, the inlet port and the valve produce the turbulent effect of fuel mixture.
True
False
Q.16
Each fission of Uproduces on the average __________ fast neutrons as a product of reaction.
2.46
24.6
246
2460
Q.17
The pressure at the end of compression in the case of diesel engine is of the order of
12 kg/cm
35 kg/cm
20 kg/cm
6 kg/cm
Q.18
The air standard efficiency of an I.C. engine depends on (A) Fuel used
Compression ratio
Fuel used
Speed of engine
None of these
Q.19
The ratio of the indicated thermal efficiency to the air standard efficiency is known as
Volumetric efficiency
Relative efficiency
Overall efficiency
Mechanical efficiency
Q.20
The compression ignition engines are governed by
Qualitative governing
Hit and miss governing
Quantitative governing
None of these
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page