The frictional power (F.P.) is given by P. P. - I.P. F.P. = I.P. - P./I.P. P. F.P. = F.P. = I.P./ F.P. = TRUE ANSWER : ? YOUR ANSWER : ?
A spark plug gap is kept from 0.2 to 0.8 mm 0.4 to 0.9 mm 0.6 to 1.0 mm 0.3 to 0.7 mm TRUE ANSWER : ? YOUR ANSWER : ?
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere. Greater than Less than None of the listed here Equal to TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will Decrease May increase or decrease depending on other factors Be independent Increase TRUE ANSWER : ? YOUR ANSWER : ?
The minimum cranking speed in case of petrol engine is about Half the operating speed One fourth of operating speed 250 - 300 rpm 60 - 80 rpm TRUE ANSWER : ? YOUR ANSWER : ?
The specific fuel consumption per BHP hour for diesel engine is approximately 0.3 kg 0.15 kg 0.2 kg 0.25 kg TRUE ANSWER : ? YOUR ANSWER : ?
Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads The engine is rarely operated The friction is unpredictable The small difference in cooling water temperature or in internal friction has a disproportionate effect The friction is high TRUE ANSWER : ? YOUR ANSWER : ?
The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be Lower Remain unaffected None of the listed here Higher TRUE ANSWER : ? YOUR ANSWER : ?
In a four stroke cycle diesel engine, the exhaust valve May open and close anywhere Opens at 30° before bottom dead centre and closes at 10° after top dead centre Opens at 30° after bottom dead centre and closes at 10° before top dead centre Opens at bottom dead centre and closes at top dead centre TRUE ANSWER : ? YOUR ANSWER : ?
The process of breaking up or a liquid into fine droplets by spraying is called Vaporisation Atomization Ionization Carburetion TRUE ANSWER : ? YOUR ANSWER : ?