Chemical Engineering Thermodynamics A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect? Vapor compression cycle using expansion valve Carnot refrigeration cycle Air refrigeration cycle Vapor compression cycle using expansion engine Vapor compression cycle using expansion valve Carnot refrigeration cycle Air refrigeration cycle Vapor compression cycle using expansion engine ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in Increased or decreased COP ; depending upon the type of refrigerant Decreased COP No change in the value of COP Enhanced COP Increased or decreased COP ; depending upon the type of refrigerant Decreased COP No change in the value of COP Enhanced COP ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature) √(6KT/m) √(3KT/m) √(2KT/m) 3KT/m √(6KT/m) √(3KT/m) √(2KT/m) 3KT/m ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In a homogeneous solution, the activity co-efficient of a component depends upon the Pressure Composition All of these Temperature Pressure Composition All of these Temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Rotary lime kiln is an example of a/an __________ system. Closed Isolated Open Non-thermodynamic Closed Isolated Open Non-thermodynamic ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c. 200 205 50 100 200 205 50 100 ANSWER DOWNLOAD EXAMIANS APP
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