The probability of knocking in diesel engines is increased by All of these High self ignition temperature Higher viscosity Low volatility TRUE ANSWER : ? YOUR ANSWER : ?
In a four stroke cycle diesel engine, the exhaust valve May open and close anywhere Opens at bottom dead centre and closes at top dead centre 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 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following does not relate to a compression ignition engine? Fuel injector Fuel pump Carburettor Governor TRUE ANSWER : ? YOUR ANSWER : ?
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of 0 120 50 100 TRUE ANSWER : ? YOUR ANSWER : ?
The function of a distributor in a coil ignition system of I.C. engines is To time the spark To distribute power To distribute current To distribute spark TRUE ANSWER : ? YOUR ANSWER : ?
If Vâ‚ is the jet velocity and Vâ‚€ is the vehicle velocity, then the propulsive efficiency of a rocket is given by Vâ‚€/(Vâ‚€ + Vâ‚) [2(Vâ‚€/Vâ‚)]/ [1 + (Vâ‚€/Vâ‚)²] (Vâ‚€/Vâ‚)/ [1 + (Vâ‚€/Vâ‚)²] Vâ‚/(Vâ‚€ + Vâ‚) TRUE ANSWER : ? YOUR ANSWER : ?
The increase in intake temperature of internal combustion engines will ___ efficiency. Increase Decrease None of the listed here Have no effect on TRUE ANSWER : ? YOUR ANSWER : ?
The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft 43832 4 1 2 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 Remain unaffected None of the listed here Higher Lower TRUE ANSWER : ? YOUR ANSWER : ?
The pressure at the end of compression, in petrol engines, is approximately 35 bar 10 bar 20 bar 25 bar TRUE ANSWER : ? YOUR ANSWER : ?