The self ignition temperature of petrol is _________ as compared to diesel oil. Same Lower None of these Higher TRUE ANSWER : ? YOUR ANSWER : ?
The air-fuel ratio in petrol engines is controlled by Injection Governing Carburetion Controlling valve opening/closing TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will May increase or decrease depending on other factors Increase Decrease Be independent TRUE ANSWER : ? YOUR ANSWER : ?
The turbine of the turboprop engine is ___ that of the turbojet engine. Smaller than Bigger than None of the listed here Same as TRUE ANSWER : ? YOUR ANSWER : ?
The brake power is the power available In the engine cylinder At the crank shaft At the crank pin None of these TRUE ANSWER : ? YOUR ANSWER : ?
By higher octane number of spark ignition fuel, it is meant that the fuel has Higher heating value Lower volatility Higher flash point Longer ignition delay TRUE ANSWER : ? YOUR ANSWER : ?
A stoichiometric air-fuel ratio is Rich mixture for idling Lean mixture Rich mixture for over loads Chemically correct mixture TRUE ANSWER : ? YOUR ANSWER : ?
If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be 0.02 0.08 0.04 0.14 TRUE ANSWER : ? YOUR ANSWER : ?
As compared to air standard cycle, in actual working, the effect of variation in specific heats is to Increase maximum pressure and maximum temperature Reduce maximum pressure and maximum temperature Increase maximum pressure and decrease maximum temperature Decrease maximum pressure and increase maximum temperature TRUE ANSWER : ? YOUR ANSWER : ?
The correct sequence of the decreasing order of brake thermal efficiency of the three given basic types of engines is Two stroke S.I. engine, four stroke S.I. engine, four stroke C.I. engine Four stroke C.I. engine, four stroke S.I. engine, two stroke S.I. engine Four stroke S.I. engine, four stroke C.I. engine, two stroke S.I. engine Four stroke C.I. engine, two stroke S.I. engine, four stroke S.I. engine TRUE ANSWER : ? YOUR ANSWER : ?