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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

Increases
None of these
Decreases
Remains constant

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Refrigeration and Air Conditioning
Most thermostatic expansion valves are set for a superheat of

10°C
5°C
15°C
20°C

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 + C.O.P
1 + (1/C.O.P)
1 - (1/C.O.P)
1 - C.O.P.

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

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

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Gives noisy operation
Cools below 0°C
Gives quiet operation
Requires little power consumption

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Less
More for small capacity and less for high capacity
More
Same

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MORE MCQ ON Refrigeration and Air Conditioning

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