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Internal Combustion Engines

Internal Combustion Engines
Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.

Four times
Double
Same
Half

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

ηm = I.P/B.P
ηm = B.P/I.P
None of these
ηm = (B.P × I.P)/100

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Internal Combustion Engines
The Cipoletti weir is a __________ weir.

Trapezoidal
Triangular
Rectangular
Circular

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Internal Combustion Engines
The colour of exhaust from diesel engine is generally

Violet
White
Black
Bluish

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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
3000 km/h
1000 km/h

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

None of these
Increase
Remain same
Decrease

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