Internal Combustion Engines The normal heptane (C₇H₁₆) is given a rating of ________ octane number. 100 50 0 120 100 50 0 120 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 Exhaust valve opens just after bottom dead center and closes just before top dead center Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center May open and close anywhere Exhaust valve opens at bottom dead center and closes at top dead center Exhaust valve opens just after bottom dead center and closes just before top dead center Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center May open and close anywhere ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The theoretically correct mixture of air and petrol is 25 : 1 15 : 1 10 : 1 20 : 1 25 : 1 15 : 1 10 : 1 20 : 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in spark ignition engines can be reduced by None of these Both (A) and (B) Retarding the spark Increasing the engine speed None of these Both (A) and (B) Retarding the spark Increasing the engine speed 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 20-30 kg/cm² and 450-500°C 4-6 kg/cm² and 200-250°C 12-20 kg/cm² and 350-450°C 6-12 kg/cm² and 250-350°C 20-30 kg/cm² and 450-500°C 4-6 kg/cm² and 200-250°C 12-20 kg/cm² and 350-450°C 6-12 kg/cm² and 250-350°C ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Thermal efficiency of a two stroke cycle engine is ___ a four stroke cycle engine. None of the listed here Equal to Greater than Less than None of the listed here Equal to Greater than Less than ANSWER DOWNLOAD EXAMIANS APP