Internal Combustion Engines The air standard efficiency of an I.C. engine is given by (where r = Compression ratio, and γ = Ratio of specific heats) 1 - (1/rγ - 1) 1 - rγ - 1 None of these 1 + rγ - 1 1 - (1/rγ - 1) 1 - rγ - 1 None of these 1 + rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have Low density Low temperature Long ignition delay All of these Low density Low temperature Long ignition delay All of these 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° after bottom dead centre and closes at 10° before top dead centre 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 May open and close anywhere Opens at 30° after bottom dead centre and closes at 10° before top dead centre 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 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to Ensure that penetration is not high All of these Inject fuel in a chamber of high pressure at the end of compression stroke Inject fuel at a high velocity to facilitate atomization Ensure that penetration is not high All of these Inject fuel in a chamber of high pressure at the end of compression stroke Inject fuel at a high velocity to facilitate atomization ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In petrol engines, the delay period is of the order of 0.001 second 0.004 second 0.002 second 0.003 second 0.001 second 0.004 second 0.002 second 0.003 second ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The brake power is the power available None of these At the crank shaft At the crank pin In the engine cylinder None of these At the crank shaft At the crank pin In the engine cylinder ANSWER DOWNLOAD EXAMIANS APP
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