Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

2. The freezing point of sulphur dioxide is

3. The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

4. A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

5. The capillary tube, as an expansion device, is used in

6. The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

7. Highest temperature encountered in refrigeration cycle should be

8. The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

9. A thermostatic expansion valve in a refrigeration system

10. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process


 

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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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