Refrigeration & Air-Conditioning Practice Set-7

August 7, 2021

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1. In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

2. The central air conditioning system has ___________ overall efficiency as compared to individual systems.

3. The lowest temperature during the cycle in a vapour compression system occurs after

4. The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

5. When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

6. For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

7. Which of the following refrigerant is highly toxic and flammable?

8. The heat rejection factor (HRF) is given by

9. In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

10. During sensible cooling of air, specific humidity


 

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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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