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
Can deal with movement of the suspension both vertically and in other directions
Reduce the amount of sliding resistance

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Automobile Engineering in ME
In bias ply tyres

One ply layer runs diagonally one way and another layer runs diagonally the other way
All plies run parallel to one another
All of these
Belts of steel mesh are used in the tyres

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Automobile Engineering in ME
The purpose of a balancer shaft is to

Increase inertia force of the rotating crankshaft
Reduce vibrations caused by the crankshaft rotation
Balance the timing in the movement of the two groups of pistons
Adjusts the timing of the intake and exhaust valve openings

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