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 The increase of cooling water temperature in petrol engine will _________ the knocking tendency. Not effect Decrease None of these Increase Not effect Decrease None of these Increase ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is Same More May be more or less depending on engine capacity Less Same More May be more or less depending on engine capacity Less ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Compression ratio of I.C. Engines is Volume displaced by piston per stroke and clearance volume in cylinder The ratio of volumes of air in cylinder before compression stroke and after compression stroke Swept volume/cylinder volume Ratio of pressure after compression and before compression Volume displaced by piston per stroke and clearance volume in cylinder The ratio of volumes of air in cylinder before compression stroke and after compression stroke Swept volume/cylinder volume Ratio of pressure after compression and before compression ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The octane number of petrol, generally available, is 40 to 60 60 to 80 20 to 40 80 to 100 40 to 60 60 to 80 20 to 40 80 to 100 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The calorific value of gaseous fuels is expressed in terms of kcal/kg kcal/m² kcal/m3 kcal kcal/kg kcal/m² kcal/m3 kcal ANSWER DOWNLOAD EXAMIANS APP
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