Internal Combustion Engines If Vâ‚ is the jet velocity and Vâ‚€ is the vehicle velocity, then propulsive efficiency of a turbojet engine is 2Vâ‚ / (Vâ‚€ + Vâ‚) Vâ‚€ / (Vâ‚€ + Vâ‚) Vâ‚ / (Vâ‚€ + Vâ‚) 2Vâ‚€ / (Vâ‚€ + Vâ‚) 2Vâ‚ / (Vâ‚€ + Vâ‚) Vâ‚€ / (Vâ‚€ + Vâ‚) Vâ‚ / (Vâ‚€ + Vâ‚) 2Vâ‚€ / (Vâ‚€ + Vâ‚) ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A diesel engine as compared to petrol engine (both running and rated load) is More efficient Less efficient Equally efficient Other factors will decide it More efficient Less efficient Equally efficient Other factors will decide it ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A diesel engine has compression ratio from 25 to 40 10 to 15 6 to 10 15 to 25 25 to 40 10 to 15 6 to 10 15 to 25 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ratio of the indicated thermal efficiency to the air standard efficiency is known as Volumetric efficiency Mechanical efficiency Relative efficiency Overall efficiency Volumetric efficiency Mechanical efficiency Relative efficiency Overall efficiency ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a typical medium speed 4-stroke cycle diesel engines May open and close anywhere 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 Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center May open and close anywhere 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 Exhaust valve opens at 35° before bottom dead center and closes at 20° after top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is 264 cm3 248 cm3 252 cm3 286 cm3 264 cm3 248 cm3 252 cm3 286 cm3 ANSWER DOWNLOAD EXAMIANS APP
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