Internal Combustion Engines
In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the

Beginning of exhaust stroke
End of exhaust stroke
End of suction stroke
Beginning of suction stroke

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Internal Combustion Engines
The correct sequence of the decreasing order of brake thermal efficiency of the three given basic types of engines is

Four stroke C.I. engine, four stroke S.I. engine, two stroke S.I. engine
Four stroke S.I. engine, four stroke C.I. engine, two stroke S.I. engine
Four stroke C.I. engine, two stroke S.I. engine, four stroke S.I. engine
Two stroke S.I. engine, four stroke S.I. engine, four stroke C.I. engine

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Internal Combustion Engines
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?

Inlet valve closing before bottom dead center
Inlet valve closing after bottom dead center
Exhaust valve closing after top dead center
Inlet valve opening before top dead center

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