Automobile Engineering in ME
When the brake pedal free play is less than the specified value, then the

Vapour locking occurs in the brake lines
Brake fades
Brake drags
Antilock braking system malfunctions

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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

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

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Automobile Engineering in ME
The purpose of a cylinder head gasket is to

Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head
Removes impurities from cylinder head lubricating oil
None of these
Prevent engine oil from going into combustion chamber

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