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Refrigeration and Air Conditioning - Interview Questions and Answers

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36. 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.
Explanation:
37. The COP of a domestic refrigerator
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.
Explanation:
38. Condensing temperature in a refrigerator is the temperature
A. of cooling medium
B. of freezing zone
C. of evaporator
D. at which refrigerant gas becomes liquid
E. condensing temperature of ice.
Explanation:
39. The higher temperature in vapour compression cycle occurs at
A. receiver
B. expansion valve
C. evaporator
D. condenser discharge
E. compressor discharge.
Explanation:
40. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to
A. collect liquid refrigerant and prevent it from going to compressor
B. detect liquid in vapour
C. superheat the vapour
D. collect vapours
E. increase refrigeration effect.
Explanation:
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