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 - (1/rγ - 1) None of these 1 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these 1 - rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The exhaust valve in a four stroke cycle petrol engine Opens at 50° after bottom dead center and closes at 15° before top dead center May open and close anywhere Opens at 50° before bottom dead center and closes at 15° after top dead center Opens at bottom dead center and closes at top dead center Opens at 50° after bottom dead center and closes at 15° before top dead center May open and close anywhere Opens at 50° before bottom dead center and closes at 15° after top dead center Opens at bottom dead center and closes at top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed 180°C 120°C 80°C 240°C 180°C 120°C 80°C 240°C ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A carburettor is used to supply Petrol and air Petrol, air and lubricating oil Air and diesel Petrol and lubricating oil Petrol and air Petrol, air and lubricating oil Air and diesel Petrol and lubricating oil ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The frictional power (F.P.) is given by F.P. = I.P. - P. - I.P. F.P. = I.P./ P. F.P. = P./I.P. F.P. = P. F.P. = I.P. - P. - I.P. F.P. = I.P./ P. F.P. = P./I.P. F.P. = P. ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following medium is compressed in a Diesel engine cylinder? Air and fuel Air alone Air and lub oil Fuel alone Air and fuel Air alone Air and lub oil Fuel alone ANSWER DOWNLOAD EXAMIANS APP
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