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Refrigeration and Air Conditioning - Interview Questions and Answers

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21. Refrigeration in aeroplanes usually employs the following refrigerant
A. C02
B. Freon-11
C. Freon-22
D. Air
E. none of the above.
Explanation:
22. Highest temperature encountered in refrigeration cycle should be
A. near critical temperature of refrigerant
B. above critical temperature
C. at critica. temperature
D. much below critical temperature
E. could be anywhere.
Explanation:
23. Ammonia-absorption refrigeration cycle requires
A. very little work input
B. maximum work input
C. nearly same work input as for vapour compression cycle
D. zero work input
E. none of the above.
Explanation:
24. Accumulators should have adequate volume to store refrigerant charge at least
A. 10%
B. 25%
C. 50%
D. 75%
E. 100%.
Explanation:
25. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is
A. less than 2 kg
B. more than or equal to 3.65 kg
C. more than 10 kg
D. there is no such consideration
E. pone of the above.
Explanation:
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