The volumetric efficiency of a well designed engine may be 75 to 90% 30 to 40% 40 to 60% 60 to 70% TRUE ANSWER : ? YOUR ANSWER : ?
A hydraulic ram is a device used to To lift water from deep wells Increase the pressure of water To lift small quantity of water to a greater height when a large quantity of water is available at a smaller height Store the energy of water TRUE ANSWER : ? YOUR ANSWER : ?
A 5 BHP engine running at full load would consume diesel of the order of 1 kg/hr 0.3 kg/hr 5 kg/hr 3 kg/hr TRUE ANSWER : ? YOUR ANSWER : ?
The theoretically correct air fuel ratio for petrol engine is of the order of 0.62569444444444 0.50069444444444 0.25069444444444 0.37569444444444 TRUE ANSWER : ? YOUR ANSWER : ?
A higher compression ratio causes Pre-ignition Any one of these Increase in detonation Acceleration in the rate of combustion TRUE ANSWER : ? YOUR ANSWER : ?
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to Inject fuel in a chamber of high pressure at the end of compression stroke Ensure that penetration is not high Inject fuel at a high velocity to facilitate atomization All of these TRUE ANSWER : ? YOUR ANSWER : ?
A supercharged engine as compared to an ordinary engine All of these Requires smaller foundation Consumes less lubricating oil Is lighter TRUE ANSWER : ? YOUR ANSWER : ?
The scavenging efficiency of a four stroke cycle diesel engine is Below 50% Between 85 and 95% Between 95 and 100% Between 50 and 85% TRUE ANSWER : ? YOUR ANSWER : ?
The knocking tendency in compression ignition engines for a given fuel will be Enhanced by decreasing compression ratio Enhanced by increasing compression ratio None of these Dependent on other factors TRUE ANSWER : ? YOUR ANSWER : ?
A diesel engine, during suction stroke, draws A mixture of diesel and air Diesel only Air only None of these TRUE ANSWER : ? YOUR ANSWER : ?