Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

2. A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

3. In a refrigeration system, the expansion device is connected between the

4. For obtaining high COP, the pressure range of compressor should be

5. Most thermostatic expansion valves are set for a superheat of

6. The vapour compression refrigerator employs the following cycle

7. The bank of tubes at the back of domestic refrigerator is

8. The domestic refrigerator uses following type of compressor

9. Rating of a domestic refrigerator is of the order of

10. Critical temperature is the temperature above which


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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