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Internal Combustion Engines

Internal Combustion Engines
Alpha-methyl-naphthalene (C11H10) has a cetane number of

100
120
0
50

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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

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

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Internal Combustion Engines
High speed compression engines operate on

Diesel cycle
Dual combustion cycle
Otto cycle
All of these

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Internal Combustion Engines
The combustion in compression ignition engines is

Heterogeneous
Homogeneous
Both (A) and (B)
None of these

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Internal Combustion Engines
The loud pulsating noise heard within the cylinder of an internal combustion engine is known as

Turbulence
Detonation
Supercharging
Pre-ignition

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

ηm = B.P/I.P
ηm = (B.P × I.P)/100
None of the listed here
ηm = I.P/B.P

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