Internal Combustion Engines
The function of a distributor in a coil ignition system of I.C. engines is

To distribute spark
To time the spark
To distribute current
To distribute power

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

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