Automobile Engineering in ME
An imbalance wheel during vehicle operation

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

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Automobile Engineering in ME
The drive-shafts are connected to the differential and wheel hubs through universal joints because the universal joints

Compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.
Absorb the vibrations transferred from the surface of the road
Absorb any difference in speed between the left and right wheels when the vehicle is turning
None of these

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Automobile Engineering in ME
The function of anti-lock brake system (ABS) is that is

Maintains directional control during braking by preventing the wheels from locking
Reduces the stopping distance
Minimizes the brake fade
Prevents nose dives during braking and thereby postpones locking of the wheels

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