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Internal Combustion Engines

Internal Combustion Engines
A diesel engine has

4 valves
1 valve
2 valves
3 valves

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Internal Combustion Engines
A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.

Same
Four times
Double
Half

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Internal Combustion Engines
Alpha-methyl-naphthalene (C11H10) has a cetane number of

50
120
100
0

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Internal Combustion Engines
The maximum propulsive efficiency of a turbojet engine is at a speed of

2400 km/h
2000 km/h
1000 km/h
3000 km/h

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Internal Combustion Engines
A carburettor is used to supply

Petrol and lubricating oil
Petrol, air and lubricating oil
Petrol and air
Air and diesel

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Internal Combustion Engines
If the compression ratio in I.C. engine increases, then its thermal efficiency will

Decrease
Remain same
Increase
None of these

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