Internal Combustion Engines
In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then ___ is employed.

None of the listed here
Fuel pump
Carburettor
Injector

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Internal Combustion Engines
As compared to air standard cycle, in actual working, the effect of variation in specific heats is to

Increase maximum pressure and decrease maximum temperature
Increase maximum pressure and maximum temperature
Decrease maximum pressure and increase maximum temperature
Reduce maximum pressure and maximum temperature

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Internal Combustion Engines
Flash point of fuel oil is

Temperature at which it catches fire without external aid
Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
Temperature at which it solidifies or congeals
Indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off

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