Internal Combustion Engines As compared to air standard cycle, in actual working, the effect of variation in specific heats is to Reduce maximum pressure and maximum temperature Increase maximum pressure and maximum temperature Increase maximum pressure and decrease maximum temperature Decrease maximum pressure and increase maximum temperature Reduce maximum pressure and maximum temperature Increase maximum pressure and maximum temperature Increase maximum pressure and decrease maximum temperature Decrease maximum pressure and increase maximum temperature ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking tendency in compression ignition engines for a given fuel will be Enhanced by increasing compression ratio Dependent on other factors None of these Enhanced by decreasing compression ratio Enhanced by increasing compression ratio Dependent on other factors None of these Enhanced by decreasing compression ratio ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The exhaust valve in a four stroke cycle petrol engine May open and close anywhere Opens at bottom dead center and closes at top dead center Opens at 50° before bottom dead center and closes at 15° after top dead center Opens at 50° after bottom dead center and closes at 15° before top dead center May open and close anywhere Opens at bottom dead center and closes at top dead center Opens at 50° before bottom dead center and closes at 15° after top dead center Opens at 50° after bottom dead center and closes at 15° before top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The probability of knocking in diesel engines is increased by All of these Low volatility Higher viscosity High self ignition temperature All of these Low volatility Higher viscosity High self ignition temperature ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The thermal efficiency of petrol and gas engines is about 0.15 0.7 0.3 0.5 0.15 0.7 0.3 0.5 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 6-12 kg/cm² and 250-350°C 12-20 kg/cm² and 350-450°C 20-30 kg/cm² and 450-500°C 4-6 kg/cm² and 200-250°C 6-12 kg/cm² and 250-350°C 12-20 kg/cm² and 350-450°C ANSWER DOWNLOAD EXAMIANS APP
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