Internal Combustion Engines
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is

248 cm3
286 cm3
252 cm3
264 cm3

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Internal Combustion Engines
In a four stroke cycle diesel engine, the inlet valve

Opens at top dead center and closes at bottom dead center
Opens at 20° before top dead center and closes at 40° after bottom dead center
May open and close anywhere
Opens at 20° after top dead center and closes at 20° before bottom dead center

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Internal Combustion Engines
The delay period in compression ignition engines depends upon

Relative velocity between the fuel injection and air turbulence pressure of residual gases
Temperature and pressure in the cylinder at the time of injection
Nature of the fuel mixture strength
All of these

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