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Refrigeration and Air Conditioning

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
2.15
1.25
1

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Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Evaporator
Compressor
Condenser
Expansion valve

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

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

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Refrigeration and Air Conditioning
In chemical dehumidification process,

All of these
Dew point temperature decreases
Wet bulb temperature decreases
Dry bulb temperature increases

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Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Increases
Decreases
None of these
Remains constant

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Refrigeration and Air Conditioning
Air refrigeration operates on

Brayton cycle
Reversed Carnot cycle
Carnot cycle
Rankine’s cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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