Internal Combustion Engines
Which of the following statement is correct regarding normal cetane?

It has long carbon chain structure
All of these
Its chemical name is normal hexadecane
It is a standard fuel used for knock rating of diesel engines

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Internal Combustion Engines
In a four stroke cycle diesel engine, the compression

Starts at top dead center and ends at 40° before bottom dead center
Starts at 40° after bottom dead center and ends at 10° before top dead center
May start and end anywhere
Starts at 40° before top dead center and ends at 40° after top dead center

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