Automobile Engineering in ME
The cam shaft in an engine is always mounted

Perpendicular to the crankshaft
Inclined to the crankshaft
Parallel to the crankshaft
None of these

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Automobile Engineering in ME
The function of a first compression ring (top ring) is that it

Creates swirl
Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Maintains a seal and prevents the fuel leakage
Increases the combustion temperature

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