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. Most thermostatic expansion valves are set for a superheat of

3. The freezing point of sulphur dioxide is

4. The operating pressure for refrigerating units using R-12 as a refrigerant is

5. Freon group of refrigerants are

6. Which of the following is not a desirable property of a refrigerant?

7. The curved lines on a psychrometric chart indicates

8. The boiling point of ammonia is

9. Which of the following cycles uses air as the refrigerant?

10. The vapour compression refrigerator employs the following cycle


 

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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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