Chemical Engineering Thermodynamics Which of the following has the minimum value of COP for a given refrigeration effect? Air refrigeration cycle Reverse Carnot cycle Ordinary vapour-compression cycle Vapour-compression process with a reversible expansion engine Air refrigeration cycle Reverse Carnot cycle Ordinary vapour-compression cycle Vapour-compression process with a reversible expansion engine ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics y = specific heat ratio of an ideal gas is equal to Cp/Cv Cp/(CP-R) 1 + (R/CV) All of these Cp/Cv Cp/(CP-R) 1 + (R/CV) All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics After throttling, gas temperature Increases Remains same May increase or decrease ; depends on the nature of the gas Decreases Increases Remains same May increase or decrease ; depends on the nature of the gas Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The expression, ΔG = nRT .In P₂/P₁ , gives the free energy change Under reversible isothermal volume change During heating of an ideal gas During cooling of an ideal gas With pressure changes at constant temperature Under reversible isothermal volume change During heating of an ideal gas During cooling of an ideal gas With pressure changes at constant temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics With increase in compression ratio, the efficiency of the otto engine Decreases Remains constant Increases Increases linearly Decreases Remains constant Increases Increases linearly ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The thermodynamic law, PVy = constant, is not applicable in case of Adiabatic compression of a perfect gas Ideal compression of air Adiabatic expansion of steam in a turbine Free expansion of an ideal gas Adiabatic compression of a perfect gas Ideal compression of air Adiabatic expansion of steam in a turbine Free expansion of an ideal gas ANSWER DOWNLOAD EXAMIANS APP
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