Internal Combustion Engines In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency. Increase Not effected None of these Decrease Increase Not effected None of these Decrease 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 0.08 0.04 0.02 0.14 0.08 0.04 0.02 0.14 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Diesel engine can work on very lean air fuel ratio of the order of 30: 1. A petrol engine can also work on such a lean ratio provided Flywheel size is proper Cannot work as it is impossible It is properly designed Best quality fuel is used Flywheel size is proper Cannot work as it is impossible It is properly designed Best quality fuel is used ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle diesel engine, the exhaust valve May open and close anywhere Opens at 30° before bottom dead centre and closes at 10° after top dead centre Opens at bottom dead centre and closes at top dead centre Opens at 30° after bottom dead centre and closes at 10° before top dead centre May open and close anywhere Opens at 30° before bottom dead centre and closes at 10° after top dead centre Opens at bottom dead centre and closes at top dead centre Opens at 30° after bottom dead centre and closes at 10° before top dead centre ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The probability of knocking in diesel engines is increased by All of these High self ignition temperature Higher viscosity Low volatility All of these High self ignition temperature Higher viscosity Low volatility ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knock in diesel engine occurs due to Instantaneous and rapid burning of the first part of the charge Instantaneous auto ignition of last part of charge Delayed burning of the first part of the charge Reduction of delay period Instantaneous and rapid burning of the first part of the charge Instantaneous auto ignition of last part of charge Delayed burning of the first part of the charge Reduction of delay period ANSWER DOWNLOAD EXAMIANS APP
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