Internal Combustion Engines
In a petrol engine, the mixture has the lowest pressure at the

End of suction stroke
Beginning of suction stroke
End of compression stroke
None of these

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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
Nature of the fuel mixture strength
All of these
Temperature and pressure in the cylinder at the time of injection

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