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Internal Combustion Engines

Internal Combustion Engines
The thermal efficiency of petrol and gas engines is about

0.3
0.5
0.15
0.7

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Internal Combustion Engines
If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the

Engine starts overheating
Piston rings would stick into piston grooves
Exhaust will be smoky
Scavenging occurs

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

Equal to
Above
None of these
Below

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Internal Combustion Engines
The calorific value of gaseous fuels is expressed in terms of

kcal/kg
kcal/m²
kcal
kcal/m3

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

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

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Internal Combustion Engines
The advancing of spark timing in spark ignition engines will ___ knocking tendency.

None of the listed here
Increase
Reduce
Not effect

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