The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called Volumetric efficiency Overall efficiency Mechanical efficiency Relative efficiency TRUE ANSWER : ? YOUR ANSWER : ?
The cam shaft of a four stroke I.C. engine running at 1500 rpm will run at 750 rpm 3000 rpm 1500 rpm Any value independent of engine speed TRUE ANSWER : ? YOUR ANSWER : ?
The specific fuel consumption per BH hour for a petrol engine is approximately 0.25 kg 0.2 kg 0.15 kg 0.3 kg TRUE ANSWER : ? YOUR ANSWER : ?
The frictional power (F.P.) is given by F.P. = I.P. - F.P. = I.P./ P./I.P. P. P. - I.P. F.P. = F.P. = P. TRUE ANSWER : ? YOUR ANSWER : ?
The minimum cranking speed in case of petrol engine is about One fourth of operating speed 250 - 300 rpm 60 - 80 rpm Half the operating speed TRUE ANSWER : ? YOUR ANSWER : ?
The working pressure and temperature inside the cylinder of an internal combustion engine is _________ as compared to a steam engine. Low Very high Very low High TRUE ANSWER : ? YOUR ANSWER : ?
Stoichiometric ratio is Chemically correct air-fuel ratio by volume None of these Chemically correct air-fuel ratio by weight Actual air-fuel ratio for maximum efficiency TRUE ANSWER : ? YOUR ANSWER : ?
The output of a diesel engine can be increased without increasing the engine revolution or size in following way Scavenging Supercharging Heating incoming air Feeding more fuel TRUE ANSWER : ? YOUR ANSWER : ?
The basic requirement of a good combustion chamber is Low compression ratio High thermal efficiency and power output Minimum turbulence Low volumetric efficiency TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of a petrol engine is _________ as compared to diesel engine. More Less None of these Same TRUE ANSWER : ? YOUR ANSWER : ?