The working pressure and temperature inside the cylinder of an internal combustion engine is _________ as compared to a steam engine. Very high Very low High Low TRUE ANSWER : ? YOUR ANSWER : ?
The pressure at the end of compression in the case of diesel engine is of the order of 12 kg/cm 6 kg/cm 35 kg/cm 20 kg/cm TRUE ANSWER : ? YOUR ANSWER : ?
If the speed of the engine is increased, the indicated power will Remain same Increase None of these Decrease TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following medium is compressed in a Diesel engine cylinder? Air and fuel Air and lub oil Fuel alone Air alone TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of diesel engines on weak mixtures is Lower Unaffected Higher Dependent on other factors TRUE ANSWER : ? YOUR ANSWER : ?
The air-fuel ratio in petrol engines is controlled by Injection Carburetion Controlling valve opening/closing Governing TRUE ANSWER : ? YOUR ANSWER : ?
The minimum cranking speed in case of petrol engine is about 60 - 80 rpm 250 - 300 rpm One fourth of operating speed Half the operating speed TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called Net efficiency Relative efficiency Efficiency ratio Overall efficiency TRUE ANSWER : ? YOUR ANSWER : ?
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of 100 50 0 120 TRUE ANSWER : ? YOUR ANSWER : ?