Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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

2. Which of the following cycles uses air as the refrigerant?

3. In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

4. Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

5. Freon group of refrigerants are

6. The minimum temperature to which water can be cooled in a cooling tower is

7. 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

8. The condition of refrigerant after passing through the condenser in a vapour compression system is

9. In a lithium bromide absorption refrigeration system

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


 

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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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