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 None of these 1 - (1/rγ - 1) 1 - rγ - 1 1 + rγ - 1 None of these 1 - (1/rγ - 1) 1 - rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The reference fuels for knock rating of spark ignition engines would include Normal heptane and iso-octane Iso-octane and alpha-methyl naphthalene Normal octane and aniline Iso-octane and normal hexane Normal heptane and iso-octane Iso-octane and alpha-methyl naphthalene Normal octane and aniline Iso-octane and normal hexane ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines It the temperature of intake air in IC engines is lowered, then its efficiency will Increase Decrease Increase up to certain limit and then decrease Remain same Increase Decrease Increase up to certain limit and then decrease Remain same ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The theoretically correct mixture of air and petrol is 20 : 1 15 : 1 10 : 1 25 : 1 20 : 1 15 : 1 10 : 1 25 : 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Stoichiometric ratio is Chemically correct air-fuel ratio by volume Actual air-fuel ratio for maximum efficiency None of these Chemically correct air-fuel ratio by weight Chemically correct air-fuel ratio by volume Actual air-fuel ratio for maximum efficiency None of these Chemically correct air-fuel ratio by weight ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following fuel detonates readily? Alcohol Iso-octane Benzene Normal heptane Alcohol Iso-octane Benzene Normal heptane ANSWER DOWNLOAD EXAMIANS APP
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