Internal Combustion Engines In a four stroke cycle diesel engine, the exhaust valve May open and close anywhere Opens at 30° after bottom dead centre and closes at 10° before top dead centre 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 May open and close anywhere Opens at 30° after bottom dead centre and closes at 10° before top dead centre 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 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines If the compression ratio in I.C. engine increases, then its thermal efficiency will Remain same Decrease Increase None of these Remain same Decrease Increase None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Crankcase explosion in I.C. engines usually occurs as First a big explosion followed by a mil explosion Never occurs Both mild and big explosions occurs simultaneously First a mild explosion followed by a bi explosion First a big explosion followed by a mil explosion Never occurs Both mild and big explosions occurs simultaneously First a mild explosion followed by a bi explosion ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The octane number of petrol, generally available, is 20 to 40 60 to 80 40 to 60 80 to 100 20 to 40 60 to 80 40 to 60 80 to 100 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of 120 100 0 50 120 100 0 50 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The output of a diesel engine can be increased without increasing the engine revolution or size in following way Scavenging Feeding more fuel Heating incoming air Supercharging Scavenging Feeding more fuel Heating incoming air Supercharging ANSWER DOWNLOAD EXAMIANS APP
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