Refrigeration & Air-Conditioning Practice Set-7

August 7, 2021

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1. The wet bulb temperature at 100% relative humidity is ________ dry bulb temperature.

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

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

4. 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.

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

6. A refrigerant with the highest critical pressure is

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

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

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

10. The relative coefficient of performance is equal to


 

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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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