Internal Combustion Engines The thermal efficiency of petrol and gas engines is about 0.5 0.3 0.15 0.7 0.5 0.3 0.15 0.7 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Detonation is harmful due to High intensity of knock causes crankshaft vibration and the engine runs rough Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls None of these High intensity of knock causes crankshaft vibration and the engine runs rough Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to Cylinder walls being too hot Any one of the listed here Red hot carbon deposits on cylinder walls Overheated spark plug points Cylinder walls being too hot Any one of the listed here Red hot carbon deposits on cylinder walls Overheated spark plug points ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The advancing of spark timing in spark ignition engines will ___ knocking tendency. Not effect Increase None of the listed here Reduce Not effect Increase None of the listed here Reduce ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a typical medium speed 4-stroke cycle diesel engines Exhaust valve opens at bottom dead center and closes at top dead center May open and close anywhere Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center Exhaust valve opens just after bottom dead center and closes just before top dead center Exhaust valve opens at bottom dead center and closes at top dead center May open and close anywhere Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center Exhaust valve opens just after bottom dead center and closes just before top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The function of a distributor in a coil ignition system of I.C. engines is To distribute spark To distribute current To distribute power To time the spark To distribute spark To distribute current To distribute power To time the spark ANSWER DOWNLOAD EXAMIANS APP
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