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Internal Combustion Engines

Internal Combustion Engines
In case of gas turbines, the gaseous fuel consumption guarantees are based on

Low heat value
High heat value
Net calorific value
Calorific value

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

120
100
50

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

Not effect
Reduce
None of these
Increase

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Internal Combustion Engines
The normal heptane (C₇H₁₆) is given a rating of ________ octane number.

50
100
120
0

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Internal Combustion Engines
The operation of forcing additional air under pressure into the engine cylinder is known as

Delay period
Turbulence
Supercharging
Carburetion

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Internal Combustion Engines
If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be

0.04
0.14
0.02
0.08

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