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In a psychrometric chart, one axis represents dry-bulb temperature. The axis, that is perpendicular to the dry-bulb temperature axis, represents

1. wet-bulb temperature
2. specific humidity
3. relative humidity
4. enthalpy

Correct answer: specific humidity

Solution

The axis perpendicular to the dry-bulb temperature on a psychrometric chart represents specific humidity, which indicates the amount of water vapor present in the air relative to the mass of dry air.

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