Refrigeration & Air-Conditioning Practice Set-7

August 7, 2021

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

2. 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.

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

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

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

6. A refrigerant with the highest critical pressure is

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

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

9. The human body feels comfortable when the heat stored in the body is

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


 

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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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