Internal Combustion Engines If the compression ratio in I.C. engine increases, then its thermal efficiency will Increase Remain same Decrease None of these Increase Remain same Decrease None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Scavenging air in diesel engine means Air used for combustion sent under pressure Burnt air containing products of combustion Forced air for cooling cylinder Air used for forcing burnt gases out of engine's cylinder during the exhaust period Air used for combustion sent under pressure Burnt air containing products of combustion Forced air for cooling cylinder Air used for forcing burnt gases out of engine's cylinder during the exhaust period ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following fuel has little tendency towards detonation? Iso-octane Benzene Alcohol Normal heptane Iso-octane Benzene Alcohol Normal heptane ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The octane number of petrol, generally available, is 20 to 40 80 to 100 40 to 60 60 to 80 20 to 40 80 to 100 40 to 60 60 to 80 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The thermal efficiency of petrol and gas engines is about 0.7 0.5 0.3 0.15 0.7 0.5 0.3 0.15 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a typical medium speed 4-stroke cycle diesel engines 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 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 ANSWER DOWNLOAD EXAMIANS APP
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