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Internal Combustion Engines

Internal Combustion Engines
The colour of exhaust from diesel engine is generally

Violet
Black
White
Bluish

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

50
120
100

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Internal Combustion Engines
Most high speed compression engines operate on

Dual combustion cycle
Diesel cycle
Otto cycle
Special type of air cycle

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

100
50
120

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Internal Combustion Engines
Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to

Cylinder walls being too hot
Any one of the listed here
Overheated spark plug points
Red hot carbon deposits on cylinder walls

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Internal Combustion Engines
A higher compression ratio causes

Any one of these
Increase in detonation
Acceleration in the rate of combustion
Pre-ignition

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MORE MCQ ON Internal Combustion Engines

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