Automobile Engineering in ME
The purpose of adding pigment to the paint is that it

Makes paint film hard
Optimises the viscosity of paint
None of these
Gives colour and filling up effect to the paint

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Automobile Engineering in ME
It is necessary to maintain the valve clearances as they

Increase the speed at which the valves move up and down
Reduce the resistance to sliding that occurs between the cam and the tappet
Allow for lengthening of the valves owing to the heat of combustion
Make the crankshaft turn smoothly

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