Internal Combustion Engines In a typical medium speed 4-stroke cycle diesel engines Exhaust valve opens just after bottom dead center and closes just before top dead center Exhaust valve opens at bottom dead center and closes at top dead center May open and close anywhere Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center Exhaust valve opens just after bottom dead center and closes just before top dead center Exhaust valve opens at bottom dead center and closes at top dead center May open and close anywhere Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines It the temperature of intake air in IC engines is lowered, then its efficiency will Increase up to certain limit and then decrease Increase Decrease Remain same Increase up to certain limit and then decrease Increase Decrease Remain same ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in spark ignition engines can be reduced by Retarding the spark None of these Both (A) and (B) Increasing the engine speed Retarding the spark None of these Both (A) and (B) Increasing the engine speed ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In petrol engines, the delay period is of the order of 0.002 second 0.003 second 0.001 second 0.004 second 0.002 second 0.003 second 0.001 second 0.004 second ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called Overall efficiency Volumetric efficiency Mechanical efficiency Indicated thermal efficiency Overall efficiency Volumetric efficiency Mechanical efficiency Indicated thermal efficiency 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 3000 rpm 750 rpm 1500 rpm Any value independent of engine speed 3000 rpm 750 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS