Automobile Engineering in ME
The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as

Valve timing diagram
None of these
Indicator diagram
Axial force diagram

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Automobile Engineering in ME
The ignition in a spark ignition engine takes place when the piston is

Leaving the T.D.C. position on its compression stroke
Exactly at the T.D.C. position on its compression stroke
Approaching the T.D.C. position on its compression stroke
Approaching the T.D.C position on its exhaust stroke

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