Refrigeration & Air-Conditioning Practice Set-3

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1. In a refrigeration system, the expansion device is connected between the

2. Freon group of refrigerants are

3. The vapour compression refrigerator employs the following cycle

4. The operating pressure for refrigerating units using R-12 as a refrigerant is

5. The value of C.O.P in vapour compression cycle is usually

6. A bootstrap air cooling system has

7. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

8. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

9. In a refrigeration system, heat absorbed in comparison to heat rejected is

10. 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


 

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Arbaj 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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