Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. A bootstrap air cooling system has

2. If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

3. A thermostatic expansion valve in a refrigeration system

4. The curved lines on a psychrometric chart indicates

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

6. The domestic refrigerator uses following type of compressor

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

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

9. The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate following h.p. per ton of refrigeration

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


 

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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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