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

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

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Automobile Engineering in ME
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

Allows the steering wheel to be turned by a greater amount when steering
Makes the steering more responsive
Reduces the amount of kickback for large steering angles
Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion

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