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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In chemical dehumidification process,

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

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Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Specific humidity
Dry bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
5 to 7 TR
0.1 to 0.3 TR
3 to 5 TR

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

6
0.2
1.2
5

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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
1.25
2.15
1

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Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

Degree of superheat at exit from the evaporator
Temperature of the evaporator
Pressure in the evaporator
None of these

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MORE MCQ ON Refrigeration and Air Conditioning

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