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 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these 1 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as Metacentre Centre of gravity Centre of pressure Centre of buoyancy Metacentre Centre of gravity Centre of pressure Centre of buoyancy ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Supercharging is essential in Aircraft engines Gas turbines Diesel engines Petrol engines Aircraft engines Gas turbines Diesel engines Petrol engines ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The colour of exhaust from diesel engine is generally Black Bluish Violet White Black Bluish Violet White ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking tendency in spark ignition engines may be decreased by Controlling the ignition timing Reducing the compression ratio Controlling the exhaust temperature Controlling the air-fuel mixture Controlling the ignition timing Reducing the compression ratio Controlling the exhaust temperature Controlling the air-fuel mixture ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle diesel engine, the inlet valve Opens at 20° before top dead center and closes at 40° after bottom dead center Opens at top dead center and closes at bottom dead center May open and close anywhere Opens at 20° after top dead center and closes at 20° before bottom dead center Opens at 20° before top dead center and closes at 40° after bottom dead center Opens at top dead center and closes at bottom dead center May open and close anywhere Opens at 20° after top dead center and closes at 20° before bottom dead center ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS