A. always less than unity
B. always more than unity
C. equal to unity
D. any one of the above
E. none of the above
Related Mcqs:
- In vapour compression cycle the condition of refrigerant is superheated vapour _____________________?
A. after passing through the condenser
B. before passing through the condenser
C. after passing through the expansion or throttle valve
D. before [entering the expansion valve
E. before entering the compressor - In vapour compression cycle, the conditii of refrigerant is saturated liquid________________?
A. after passing through the condenser
B. before passing through the condensei
C. after passing through the expansion throttle valve
D. before entering the expansion valve
E. before entering the compressor - Domestic refrigerator working on vapour compression cycle uses the following type of expansion device____________________?
A. electrically operated throttling valve
B. manually operated valve
C. thermostatic valve
D. capillary tube
E. expansion valve. - The higher temperature in vapour compression cycle occurs at____________________?
A. receiver
B. expansion valve
C. evaporator
D. condenser discharge
E. compressor discharge - In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?
A. suction of compressor
B. delivery of compressor
C. high pressure side close to receiver
D. low pressure side near receiver
E. anywhere in the cycle - Where does the lowest temperature occur in a vapour compression cycle ?
A. condenser
B. evaporator
C. compressor
D. expansion valve
E. receiver - Efficiency of a Carnot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle_________________?
A. 1.25
B. 0.8
C. 0.5
D. 0.25
E. none of the above - The COP of a vapor compression plant in comparison to vapor absorption plant is ________________?
A. more
B. less
C. same
D. more/less depending on size of plant
E. unpredictable - If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of – 23°C, then the Carnot COP will be_________________?
A. 0.2
B. 1.2
C. 5
D. 6
E. 10 - In vapor compression cycle, the condition of refrigerant is high pressure saturated liquid________________?
A. after passing through the condenser
B. before passing through the condenser
C. after passing through the expansion or thiottle valve
D. before entering the expansion valve
E. before entering the compressor
