Q. In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

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Q. The absolute humidity is the mass of water vapour present in 1 m³ of dry air.

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Q. In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

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Q. The refrigerant used in small-tonnage commercial machines (hermetically sealed units) is

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Q. In a lithium bromide absorption refrigeration system

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Q. The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called

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Q. The pressure at the inlet of a refrigerant compressor is called

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Q. The process, generally used in summer air conditioning to cool and dehumidify the air, is called

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Q. The leakage in a refrigeration system using ammonia is detected by

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Q. The lowest temperature during the cycle in a vapour compression system occurs after

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Q. Which of the following represents a heat pump?

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Q. In figure shown, E is a heat engine with efficiency of 0.4 and R is a refrigerator. It is given that Q2 + Q4 = 3Q1. The C.O.P. of the refrigerator is

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