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Internal Combustion Engines

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

0
120
50
100

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Internal Combustion Engines
The ratio of the indicated thermal efficiency to the air standard efficiency is known as

Overall efficiency
Volumetric efficiency
Mechanical efficiency
Relative efficiency

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Internal Combustion Engines
The mean effective pressure obtained from engine indicator indicates the

Instantaneous pressure at any instant
Minimum pressure
Maximum pressure developed
Average pressure

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Internal Combustion Engines
The air-fuel ratio of the petrol engine is controlled by

Governor
Fuel pump
Carburettor
Injector

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Internal Combustion Engines
In loop scavenging, the top of the piston is

Contoured
Slanted
Depressed
Flat

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

Not effect
Increase
Reduce
None of these

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