Automobile Engineering in ME
In bias ply tyres

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

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

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

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