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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During sensible cooling of air, specific humidity

Remains constant
Decreases
None of the listed here
Increases

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Refrigeration and Air Conditioning
Rating of a domestic refrigerator is of the order of

10 tons
5 tons
40 tons
0.1 ton

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Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Condenser
Expansion valve
Compressor
Evaporator

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

None of these
Increases
Decreases
Remains constant

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Refrigeration and Air Conditioning
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

5.12
1
2.15
1.25

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Humidity ratio
Degree of saturation
Relative humidity
Absolute humidity

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