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

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

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Automobile Engineering in ME
Wheel base of a vehicle is the

Extreme length of the vehicle
Distance between the centres of the front and rear wheels
Distance between the centres of the front tyres
Distance between the centres of the rear tyres

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