Chemical Engineering Thermodynamics Out of the following refrigeration cycles, which one has maximum COP? Air cycle Ordinary vapor compression cycle Carnot cycle Vapor compression with a reversible expansion engine Air cycle Ordinary vapor compression cycle Carnot cycle Vapor compression with a reversible expansion engine ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is More in vapour phase More in liquid phase Zero in both the phases Same in both the phases More in vapour phase More in liquid phase Zero in both the phases Same in both the phases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm³ and that in vapour phase in 391.1 cm³.Fugacity of water (in kPa) at 9000 kPa will be 9000 6753.5 6738.9 7058.3 9000 6753.5 6738.9 7058.3 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics (∂E/∂T)V is the mathematical expression for Free energy change None of these CV Enthalpy change Free energy change None of these CV Enthalpy change ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in Same COP Increased or decreased COP ; depending upon the type of refrigerant Increased COP Decreased COP Same COP Increased or decreased COP ; depending upon the type of refrigerant Increased COP Decreased COP ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process: Δ H ≠ 0 and ΔS = 0 Δ H = 0 and ΔS = 0 Δ H = 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS = 0 Δ H = 0 and ΔS = 0 Δ H = 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS ≠ 0 ANSWER DOWNLOAD EXAMIANS APP
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