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Question

A capillary tube is employed in a refrigeration cycle to

प्रशीतन चक्र में एक केशिका ट्यूब का उपयोग किया जाता है

A.

Produce a cooling effect

B.

Reduce pressure of the refrigerant

C.

Control temperature of the refrigerated space

D.

Control flow of the refrigerant

Answer ( Option B)

Reduce pressure of the refrigerant

Solution

Capillary tubes are throttling devices used to drop pressure of the refrigerant in an isenthalpic process in a refrigeration system and also control the flow of refrigerant.

Hence, the correct option is (B).

&Key Points:-

If air is throttled through a capillary tube, we see no drop in pressure.

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