Internal Combustion Engines The exhaust valve in a four stroke cycle petrol engine May open and close anywhere Opens at 50° after bottom dead center and closes at 15° before top dead center Opens at 50° before bottom dead center and closes at 15° after top dead center Opens at bottom dead center and closes at top dead center May open and close anywhere Opens at 50° after bottom dead center and closes at 15° before top dead center Opens at 50° before bottom dead center and closes at 15° after top dead center Opens at bottom dead center and closes at top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The pressure and temperature at the end of compression stroke in a petrol engine are of the order of 6-12 kg/cm² and 250-350°C 4-6 kg/cm² and 200-250°C 20-30 kg/cm² and 450-500°C 12-20 kg/cm² and 350-450°C 6-12 kg/cm² and 250-350°C 4-6 kg/cm² and 200-250°C 20-30 kg/cm² and 450-500°C 12-20 kg/cm² and 350-450°C ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Antiknock for compression ignition engines is Tetra ethyl lead Napthene Amyl nitrate Hexadecane Tetra ethyl lead Napthene Amyl nitrate Hexadecane ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The normal heptane (C₇Hâ‚₆) is given a rating of ________ octane number. 120 100 50 120 100 50 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The thermal efficiency of a petrol engine is _________ as compared to diesel engine. Less Same More None of these Less Same More None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in diesel engines may be prevented by Reducing the delay period Raising the compression ratio Increasing the inlet pressure of air All of these Reducing the delay period Raising the compression ratio Increasing the inlet pressure of air All of these ANSWER DOWNLOAD EXAMIANS APP
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