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Question 30/55
In a conditioned space, when the total grains of moisture in the air remain constant and the dry bulb temperature of the air drops, which of the following psychrometric reactions will occur?
Correct Answer: D
Comprehensive and Detailed Explanation:
Psychrometrics: Humidity ratio (grains/lb) remains constant if moisture isn't added/removed. As dry bulb temperature drops, air's capacity to hold moisture decreases, increasing relative humidity (RH).
Option Analysis:
A: Incorrect-RH rises, not falls.
B/C: Incorrect-Humidity ratio stays constant.
D: Correct-RH rises with lower temperature.
Psychrometrics: Humidity ratio (grains/lb) remains constant if moisture isn't added/removed. As dry bulb temperature drops, air's capacity to hold moisture decreases, increasing relative humidity (RH).
Option Analysis:
A: Incorrect-RH rises, not falls.
B/C: Incorrect-Humidity ratio stays constant.
D: Correct-RH rises with lower temperature.
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