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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-22
R-11
Ammonia
R-12

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Refrigeration and Air Conditioning
Chaperon equation is a relation between

Temperature and enthalpy
Specific volume and enthalpy
Temperature, pressure, specific volume and enthalpy
Temperature, pressure and enthalpy

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

Specific humidity
Dry bulb temperature
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
The freezing point of R-12 is

-95.2°C
-135.8°C
-86.6°C
-107.7°C

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Refrigeration and Air Conditioning
On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

Takes place at constant temperature
Takes place at constant pressure
Takes place at constant entropy
Involves no change in volume

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Refrigeration and Air Conditioning
In chemical dehumidification process,

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

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MORE MCQ ON Refrigeration and Air Conditioning

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