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Refrigeration and Air Conditioning - Interview Questions and Answers

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86. Cooling water is required for following equipment in ammonia absorption plant
A. condenser
B. evaporator
C. absorber
D. condenser and absorber
E. condenser, absorber and separator (rectifier).
Explanation:
87. Moisture in freon refrigeration system causes
A. ineffective refrigeration
B. high power consumption
C. freezing automatic regulating valve
D. corrosion of whole system
E. breakdown of refrigerant.
Explanation:
88. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will
A. increase
B. decrease
C. remain unaffected
D. may increase or decrease depending on the type of refrigerant used
E. unpredictable.
Explanation:
89. In S.J. unit, one ton of refrigeration is equal to
A. 210 kJ/min
B. 21 kJ/min
C. 420 kJ/min
D. 840 kJ/min
E. 105 kJ/min.
Explanation:
90. The evolution of heat of solution takes place in ammonia absorption plant when
A. ammonia vapour goes into solution
B. ammonia vapour is driven out of solution
C. lithium bromide mixes with ammonia
D. weak solution mixes with strong solution
E. lithium bromide is driven out of solution.
Explanation:
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