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Internal Combustion Engines

Internal Combustion Engines
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.

Less
None of these
More
Same

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Internal Combustion Engines
In a cycle, the spark lasts roughly for

0.1 sec
0.01 sec
1 sec
0.001 sec

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Internal Combustion Engines
In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the

Beginning of suction stroke
End of suction stroke
Beginning of exhaust stroke
End of exhaust stroke

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Internal Combustion Engines
The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.

None of these
Increase
Reduce
Not effect

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Internal Combustion Engines
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of

50
100
0
120

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Internal Combustion Engines
The term scavenging is generally associated with

High efficiency engines
Aeroplane engines
4-stroke cycle engines
2-stroke cycle engines

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