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

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

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Internal Combustion Engines
As compared to air standard cycle, in actual working, the effect of variation in specific heats is to

Reduce maximum pressure and maximum temperature
Increase maximum pressure and decrease maximum temperature
Decrease maximum pressure and increase maximum temperature
Increase maximum pressure and maximum temperature

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Internal Combustion Engines
In a coil ignition system of petrol engines, a condenser is connected across the contact breaker in order to

None of these
Both (A) and (B)
Prevent sparking across the gap between the points
Cause more rapid break of the primary current, giving a higher voltage in the secondary circuit

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