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

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

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Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Reduce the amount of noise generated
Improve the force transmission speed
Reduce the amount of sliding resistance
Can deal with movement of the suspension both vertically and in other directions

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