Automobile Engineering in ME
The function of a governor in automobiles is to

Limit the power
Limit the vehicle speed
Maximise the fuel economy
Maintain constant engine speed

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Automobile Engineering in ME
The condition that causes vapour locking in a brake system is

An excessively high engine speed on a downhill road
Overheating of the fluid due to frequent brake application
Overcooling of the brakes during high speed driving
Keeping the vehicle without use for an extended period

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