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

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

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Internal Combustion Engines
In a typical medium speed, 4-stroke cycle diesel engine

May start and end anywhere
Fuel injection starts at top dead center and ends at 20° after top dead center
Fuel injection starts at 10° before top dead center and ends at 20° after top dead center
Fuel injection starts at just before top dead center and ends just after top dead center

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