Internal Combustion Engines The operation of forcing additional air under pressure in the engine cylinder is known as Scavenging Supercharging Pre-ignition Turbulence Scavenging Supercharging Pre-ignition Turbulence ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A diesel engine is ___ as compared to petrol engine, both running at rated load. Equally efficient Less efficient None of the listed here More efficient Equally efficient Less efficient None of the listed here More efficient ANSWER DOWNLOAD EXAMIANS APP
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) 1 + rγ - 1 None of these 1 - rγ - 1 1 - (1/rγ - 1) 1 + rγ - 1 None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking in diesel engines may be prevented by Raising the compression ratio Reducing the delay period Increasing the inlet pressure of air All of these Raising the compression ratio Reducing the delay period Increasing the inlet pressure of air All of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of 75% diesel and 25% petrol 75% normal heptane and 25% iso-octane 75% iso-octane and 25% normal heptane 75% petrol and 25% diesel 75% diesel and 25% petrol 75% normal heptane and 25% iso-octane 75% iso-octane and 25% normal heptane 75% petrol and 25% diesel ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The mechanical efficiency (ηm) of the engine is given by ηm = I.P/B.P ηm = B.P/I.P ηm = (B.P × I.P)/100 None of these ηm = I.P/B.P ηm = B.P/I.P ηm = (B.P × I.P)/100 None of these ANSWER DOWNLOAD EXAMIANS APP
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