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

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

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Internal Combustion Engines
Which of the following statement is correct regarding petrol engines?

The fuel is first evaporated after passing through a carburettor and is mixed with air before ignition
All of these
A fine fuel spray mixed with air is ignited by the heat of compression which is at a high pressure
The fuel supplied to the engine cylinder is mixed with necessary amount of air and the mixture in ignited with the help of a spark plug

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