With a 75 degree dry bulb and a 73 degree wet bulb the relative humidity is?

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Prepare for the New York City Refrigeration License Exam I. Utilize flashcards, multiple-choice questions, and detailed explanations to boost your readiness. Ace your licensing exam!

Multiple Choice

With a 75 degree dry bulb and a 73 degree wet bulb the relative humidity is?

Explanation:
When the dry-bulb and wet-bulb temperatures are very close, the air is nearly saturated with moisture. The dry-bulb is the actual air temperature, while the wet-bulb temperature shows how cool the air would get if evaporation could occur freely. A small difference between them means evaporation is limited, which happens as relative humidity approaches 100%. With a 75°F dry-bulb and a 73°F wet-bulb, the gap is only 2°F, signaling very high humidity. In practical terms, relative humidity would be in the upper ranges, around the mid-to-high 80s or higher, which is why this option is the best choice.

When the dry-bulb and wet-bulb temperatures are very close, the air is nearly saturated with moisture. The dry-bulb is the actual air temperature, while the wet-bulb temperature shows how cool the air would get if evaporation could occur freely. A small difference between them means evaporation is limited, which happens as relative humidity approaches 100%. With a 75°F dry-bulb and a 73°F wet-bulb, the gap is only 2°F, signaling very high humidity. In practical terms, relative humidity would be in the upper ranges, around the mid-to-high 80s or higher, which is why this option is the best choice.

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