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
Belts of steel mesh are used in the tyres
All of these

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Automobile Engineering in ME
In a ventilated disc brake

Disc contains radial vanes between its rubbing surfaces for optimum cooling performance
Disc contains many small holes for optimum cooling performance
Caliper is covered with cooling fins
A duct directs air towards the caliper for cooling while the vehicle is moving

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