Refrigeration & Air-Conditioning Practice Set-7

August 7, 2021

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1. The leakage in a refrigeration system using ammonia is detected by

2. In a vapour compression system, the condition of refrigerant is dry saturated vapour

3. In case of sensible cooling of air, the coil efficiency is given by

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

5. During sensible cooling of air, specific humidity

6. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

7. 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

8. Most air cooled condensers are designed to operate with a temperature difference of

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

10. The emissivity of a polished silver body is _________ as compared to black body.


 

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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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