Internal Combustion Engines In a typical medium speed, 4-stroke cycle diesel engine Fuel injection starts at 10° before top dead center and ends at 20° after top dead center May start and end anywhere Fuel injection starts at just before top dead center and ends just after top dead center Fuel injection starts at top dead center and ends at 20° after top dead center Fuel injection starts at 10° before top dead center and ends at 20° after top dead center May start and end anywhere Fuel injection starts at just before top dead center and ends just after top dead center Fuel injection starts at top dead center and ends at 20° after top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The exhaust valve in a four stroke cycle petrol engine 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 May open and close anywhere ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following is not an intern’s combustion engine? 4-stroke petrol engine 2-stroke petrol engine Steam turbine Diesel engine 4-stroke petrol engine 2-stroke petrol engine Steam turbine Diesel engine ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Detonation is harmful due to High intensity of knock causes crankshaft vibration and the engine runs rough Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine None of these Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls High intensity of knock causes crankshaft vibration and the engine runs rough Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine None of these Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The cam shaft of a four stroke I.C. engine running at 1500 rpm will run at Any value independent of engine speed 1500 rpm 750 rpm 3000 rpm Any value independent of engine speed 1500 rpm 750 rpm 3000 rpm ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ignition of the charge by some hot surface within the engine before the passage of spark is called Ignition delay Detonation Pre-ignition Auto-ignition Ignition delay Detonation Pre-ignition Auto-ignition ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS