Engineering Thermodynamics The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats) 1 - rγ - 1 1 + (1/ rγ - 1) 1 + rγ - 1 1 - (1/ rγ - 1) 1 - rγ - 1 1 + (1/ rγ - 1) 1 + rγ - 1 1 - (1/ rγ - 1) ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The polytropic index (n) is given by log (v1/ v2)/ log (p1/p2) log (p1p2)/log (v1v2) log (p2/ p1)/log (v1/ v2) log [(p1v1)/(p2v2)] log (v1/ v2)/ log (p1/p2) log (p1p2)/log (v1v2) log (p2/ p1)/log (v1/ v2) log [(p1v1)/(p2v2)] ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will Decrease Remain unchanged Increase/decrease depending on application Increase Decrease Remain unchanged Increase/decrease depending on application Increase ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For which of the following substances, the internal energy and enthalpy are the functions of temperature only Perfect gas Any gas Saturated steam Water Perfect gas Any gas Saturated steam Water ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Water contained in a beaker can be made to boil by passing steam through it Any pressure At a pressure greater than atmospheric pressure At atmospheric pressure Not possible Any pressure At a pressure greater than atmospheric pressure At atmospheric pressure Not possible ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The mass of flue gas per kg of fuel is the ratio of the Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS