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Mechanical Engineering - IC Engines and Nuclear Power Plants

Exercise : IC Engines and Nuclear Power Plants - Section 2
26.
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
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
A mixture containing 65% of iso-octane and 35% of normal heptane will have
cetane number 65
octane number 65
qetane number 35
octane number 35
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Which of the following statement is wrong ?
In compression ignition engines, detonation occurs near the beginning of combustion.
Since the fuel, in compression ignition engines, is injected at the end of compression stroke, therefore, there will be no pre-ignition.
To eliminate knock in compression ignition engines, we want to achieve auto-ignition not early and desire a long delay period.
In compression ignition engines, because of hetrogeneous mixture, the rate of pressure rise is comparatively lower.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The maximum propulsive efficiency of a turbo-jet engine is at a speed of
1000 km/h
2000 km/h
2400 km/h
3000 km/h
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then __________ is employed.
fuel pump
injector
carburettor
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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