Automobile Engineering in ME
The main purpose of an engine's air cleaner is that it

Controls the engine's air intake volume
Prevents rain water from entering the engine
Prevents dust and other foreign matter from entering the engine
Reduces the engine's air intake noise

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Automobile Engineering in ME
In bias ply tyres

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

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Automobile Engineering in ME
The composition of the electrolyte in a fully charged battery is that

The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight
The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight
The electrolyte is pure sulphuric acid
The electrolyte is pure distilled water

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