Chemical Engineering Thermodynamics The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same. Work Temperature None of these Kinematic viscosity Work Temperature None of these Kinematic viscosity 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 Decreased COP Increased or decreased COP ; depending upon the type of refrigerant Increased COP Same COP Decreased COP Increased or decreased COP ; depending upon the type of refrigerant Increased COP ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible __________ process. Isentropic Isobaric Isometric Polytropic Isentropic Isobaric Isometric Polytropic ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The expression, ΔG = nRT .In P₂/P₁ , gives the free energy change With pressure changes at constant temperature During cooling of an ideal gas During heating of an ideal gas Under reversible isothermal volume change With pressure changes at constant temperature During cooling of an ideal gas During heating of an ideal gas Under reversible isothermal volume change ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The principle applied in liquefaction of gases is Neither A nor B Both A and B Adiabatic expansion Joule-Thomson effect Neither A nor B Both A and B Adiabatic expansion Joule-Thomson effect ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics PVy = constant, holds good for an isentropic process, which is Isothermal and irreversible Reversible and adiabatic Adiabatic and irreversible Reversible and isothermal Isothermal and irreversible Reversible and adiabatic Adiabatic and irreversible Reversible and isothermal ANSWER DOWNLOAD EXAMIANS APP
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