11.The coefficient of performance is the ratio of the refrigerant effect to the

12.Under-cooling in a refrigeration cycle

13.Choose the wrong statement

14.The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration

15.The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.