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 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 Opens at bottom dead center and closes at top dead center Opens at 50° before bottom dead center and closes at 15° after top dead center May open and close anywhere Opens at 50° after bottom dead center and closes at 15° before top dead center Opens at bottom dead center and closes at top dead center Opens at 50° before bottom dead center and closes at 15° after top dead center May open and close anywhere ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows Adherence to proper fuel specification Increasing the compression ratio Using additives in the fuel Avoidance of overloading Adherence to proper fuel specification Increasing the compression ratio Using additives in the fuel Avoidance of overloading ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In petrol engines, advancing of the spark timing will ___ the knocking tendency. Increase Not effect None of the listed here Decrease Increase Not effect None of the listed here Decrease ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Diesel as compared to petrol is None of these Highly ignitable More difficult to ignite Less difficult to ignite None of these Highly ignitable More difficult to ignite Less difficult to ignite ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following medium is compressed in a Diesel engine cylinder? Air alone Air and lub oil Fuel alone Air and fuel Air alone Air and lub oil Fuel alone Air and fuel ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS