Internal Combustion Engines
The spark ignition engines are governed by

Quantitative governing
Combination of (B) and (C)
Qualitative governing
Hit and miss governing

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

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

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