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 ?

Related Mcqs:

“Law of corresponding states” says that___________________?

A. Two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same B. The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature C. No gas can be liquefied above the critical temperature, howsoever high the pressure may be. D. The molar … “Law of corresponding states” says that___________________?Read More...

In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?

A. More B. Less C. Same D. Unpredictable; depends on the particular reaction...

The thermodynamic law, PVy = constant, is not applicable in case of______________?

A. Ideal compression of air B. Free expansion of an ideal gas C. Adiabatic expansion of steam in a turbine D. Adiabatic compression of a perfect gas...

(∂H/∂T)P is the mathematical expression for____________________?

A. CV B. Entropy change C. Gibbs free energy D. None of these...

Chemical potential is a/an_____________________?

A. Extensive property B. Intensive property C. Force which drives the chemical system to equilibrium D. Both B. and C...