Refrigeration & Air-Conditioning Practice Set-7

August 7, 2021

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

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

3. The dehumidification process, on the psychrometric chart, is shown by

4. A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

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

6. Wet bulb temperature is the temperature of air recorded by a thermometer, when

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

8. In a vapour compression refrigeration system, a throttle valve is used in place of an expander because

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

10.  The vertical and uniformly spaced lines on a psychrometric chart indicates


 

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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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