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Internal Combustion Engines

Internal Combustion Engines
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of

120
0
50
100

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Internal Combustion Engines
The pressure inside the cylinder is _________ the atmospheric pressure during the exhaust stroke.

Equal to
None of these
Above
Below

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Internal Combustion Engines
If the speed of the engine is increased, the indicated power will

Increase
None of these
Remain same
Decrease

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Internal Combustion Engines
If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is

2V₀ / (V₀ + V₁)
2V₁ / (V₀ + V₁)
V₁ / (V₀ + V₁)
V₀ / (V₀ + V₁)

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Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

120
100
50
0

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Internal Combustion Engines
Compression loss in I.C engines occurs due to

Use of thick head gasket
Clogged air inlet slots
All of these
Leaking piston rings

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