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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Aluminium
Brass
Steel
Copper

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Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Domestic refrigerators
All of these
Room air conditioners
Water coolers

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Refrigeration and Air Conditioning
In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

Generator
Absorber, generator and liquid pump
Absorber and generator
Liquid pump

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

(T₂ - T₁)/T₁
(T₁ - T₂)/T₁
T₁/(T₂ - T₁)
T₂/(T₂ - T₁)

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Refrigeration and Air Conditioning
The evaporator changes the low pressure liquid refrigerant from the expansion valve into

None of these
Low pressure liquid and vapour refrigerant
High pressure liquid refrigerant
Low pressure vapour refrigerant

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Refrigeration and Air Conditioning
Carbon dioxide is

Odourless
Non-flammable
All of the listed here
Colourless

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MORE MCQ ON Refrigeration and Air Conditioning

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