Refrigeration & Air-Conditioning Practice Set-4

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1. For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

2. Ammonia absorption refrigeration cycle requires

3. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd = Pressure at dry bulb temperature, pw = Saturation pressure corresponding to wet bulb temperature, and μ = Degree of saturation)

4. Air conditioning means

5. Moisture in Freon refrigeration system causes

6. Air refrigeration operates on

7. Superheating in a refrigeration cycle

8. The advantage of dry compression is that

9. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

10. In vapour compression cycle, the condition of refrigerant is very wet vapour



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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