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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

Lithium bromide
R-12
Sulphur dioxide
Carbon dioxide

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Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Decrease
Remain unaffected
May increase or decrease depending on the type of refrigerant used
Increase

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Sub-cooled liquid region
None of the listed here
Superheated vapour region
Wet vapour region

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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 lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Compression of the refrigerant vapour
Condensation of the refrigerant vapour
Evaporation of the refrigerant liquid
Metering of the refrigerant liquid

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Rankine
Reversed Rankine
Carnot
Reversed Carnot

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MORE MCQ ON Refrigeration and Air Conditioning

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