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. Kinematic viscosity Temperature None of these Work Kinematic viscosity Temperature None of these Work ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In an ideal gas mixture, fugacity of a species is equal to its None of these Chemical potential Partial pressure Vapor pressure None of these Chemical potential Partial pressure Vapor pressure ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics A nozzle is a device, which Reduces kinetic energy and increases pressure Increases both kinetic energy and pressure Reduces both kinetic energy and pressure Increases kinetic energy and decreases pressure Reduces kinetic energy and increases pressure Increases both kinetic energy and pressure Reduces both kinetic energy and pressure Increases kinetic energy and decreases pressure ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics What happens in a reversible adiabatic expansion process? Cooling takes place Pressure is constant Temperature is constant Heating takes place Cooling takes place Pressure is constant Temperature is constant Heating takes place 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 Decreased COP Increased COP Increased or decreased COP ; depending upon the type of refrigerant Same COP Decreased COP Increased COP Increased or decreased COP ; depending upon the type of refrigerant Same COP ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The absolute entropy for all crystalline substances at absolute zero temperature is Negative More than zero Indeterminate Zero Negative More than zero Indeterminate Zero ANSWER DOWNLOAD EXAMIANS APP
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