Question 493 Deck General

70% to pass

Given a dry bulb temperature of 78°F and wet bulb temperature of 66.5°F, the dew point is _______________.

A 47.0°F
B 51.5°F
C 59.0°F
D 70.0°F
AI Explanation

The correct answer is C) 59.0°F. To determine the dew point given the dry bulb and wet bulb temperatures, you can use a psychrometric chart or apply the formula: Dew Point = 237.3 * (log(Pw/Pws)) / (17.27 - log(Pw/Pws)), where Pw is the partial pressure of water vapor and Pws is the saturation pressure of water vapor. Using the provided dry bulb and wet bulb temperatures, the calculated dew point is approximately 59.0°F. The other options are incorrect because: A) 47.0°F is too low for the given conditions. B) 51.5°F is too low for the given conditions. D) 70.0°F is too high for the given conditions.

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