Internal Combustion Engines In order to eliminate knocking in compression ignition engines, there should be High self ignition temperature of fuel Late auto-ignition Low compression ratio Short delay period High self ignition temperature of fuel Late auto-ignition Low compression ratio Short delay period ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The voltage required to produce a spark across the gap, between the sparking points is 10,000 to 12,000 volts 4000 to 6000 volts 6000 to 10,000 volts 2000 to 4000 volts 10,000 to 12,000 volts 4000 to 6000 volts 6000 to 10,000 volts 2000 to 4000 volts ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The scavenging efficiency of a four stroke cycle diesel engine is Below 50% Between 85 and 95% Between 50 and 85% Between 95 and 100% Below 50% Between 85 and 95% Between 50 and 85% Between 95 and 100% ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be 0.14 0.02 0.08 0.04 0.14 0.02 0.08 0.04 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 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 6-12 kg/cm² and 250-350°C 4-6 kg/cm² and 200-250°C ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is Less or more depending on operating conditions Same Less More Less or more depending on operating conditions Same Less More ANSWER DOWNLOAD EXAMIANS APP
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