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Refrigeration and Air Conditioning - Interview Questions and Answers

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1. The condensing pressure due to the presence of non condemnable gases, as compared to that actually required for condensing temperatures without non condemnable gases,
A. will be higher
B. will be lower
C. will remain unaffected
D. may be higher or lower depending upon the nature of non condemnable gases
E. unpredictable.
Explanation:
2. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice
A. in 1 hour
B. in 1 minute
C. in 24 hours
D. in 12 hours
E. in 10 hours.
Explanation:
3. In vapour compression cycle the condition of refrigerant is superheated vapour
A. after passing through the condenser
B. before passing through the condenser
C. after passing through the expansion or throttle valve
D. before [entering the expansion valve
E. before entering the compressor.
Explanation:
4. The boiling point of ammonia is
A. -100�C
B. -50�C
C. - 33.3�C
D. 0�C
E. 33.3�C.
Explanation:
5. Clapeyron equation is applicable for registration at
A. saturation point of vapour
B. saturation point of liquid
C. sublimation temperature
D. triple point
E. critical point.
Explanation:
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