A. is less than 1
B. is more than 1
C. is equal to 1
D. depends upon the make
E. depends upon the weather conditions
Related Mcqs:
- For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be____________________?
A. small
B. high
C. euqal
D. anything
E. under some conditions small and under some conditions high - The value of COP in vapour compression cycle is usually__________________?
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 - 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 - 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 - For obtaining high COP, the pressure range of compressor should be_______________?
A. high
B. low
C. optimum
D. any value
E. there is no such criterion - 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 - 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 domestic refrigerator uses following type of compressor ____________________?
A. centrifugal
B. axial
C. miniature sealed unit
D. piston type reciprocating
E. none of the above - Rating of a domestic refrigerator is of the order of__________________?
A. 0.1 ton
B. 5 tons
C. 10 tons
D. 40 tons
E. 100 tons - The bank of tubes at the back of domestic refrigerator are _________________?
A. condenser tubes
B. evaporator tubes
C. refrigerant cooling tubes
D. capillary tubes
E. throttling device