Automobile Engineering in ME
An imbalance wheel during vehicle operation

Creates a standing wave
Bounces vertically or deflects from side to side (as seen from front or rear)
Deflects in the vehicle's longitudinal direction
Makes large noise when its heavy point hits the road surface

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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
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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