Automobile Engineering in ME
In a four speed four stroke Diesel engine, the intake valve

opens at 10° after T.D.C. and closes at 20° before B.D.C.
not listed here
opens at T.D.C. and closes at B.D.C.
opens at 20° before T.D.C. and closes at 35° after B.D.C.

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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 tyres
Distance between the centres of the front and rear wheels
Distance between the centres of the rear tyres

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