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Refrigeration and Air Conditioning - Interview Questions and Answers

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26. Air refrigeration cycle is used in
A. domestic refrigerators
B. commercial refrigerators
C. air conditioning
D. gas liquefaction
E. such a cycle does not exist.
Explanation:
27. Presence of moisture in a refrigerant affects the working of
A. compressor
B. condenser
C. evaparator
D. expansion valve.
E. heat transfer.
Explanation:
28. In a vapour compression cycle, the refrigerant immediately after expansion valve is
A. liquid
B. sub-cooled liquid
C. saturated liquid
D. wet vapour
E. dry vapour.
Explanation:
29. 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.
Explanation:
30. 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.
Explanation:
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