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) None of these 1 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these 1 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) 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 object of providing masked inlet valve in the air passage of compression ignition engines is to Control air flow Enhance flow rate Induce secondary turbulence Induce primary swirl Control air flow Enhance flow rate Induce secondary turbulence Induce primary swirl ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The object of supercharging the engine is To reduce mass of the engine per brake power All of these To reduce space occupied by the engine To increase the power output of an engine when greater power is required To reduce mass of the engine per brake power All of these To reduce space occupied by the engine To increase the power output of an engine when greater power is required ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The operation of forcing additional air under pressure into the engine cylinder is known as Delay period Turbulence Carburetion Supercharging Delay period Turbulence Carburetion Supercharging ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The purpose of testing an internal combustion engine is To satisfy the customer regarding the performance of the engine All of these To determine the information, which cannot be obtained by calculations To conform the data used in design, the validity of which may be doubtful To satisfy the customer regarding the performance of the engine All of these To determine the information, which cannot be obtained by calculations To conform the data used in design, the validity of which may be doubtful ANSWER DOWNLOAD EXAMIANS APP
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