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GATE 2025 ME – Question 19

Thermal Engineering Applications · Psychrometry and air-conditioning · 1 mark · Multiple choice

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

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Show answer and explanation

Correct answer: (B) specific humidity

Explanation

A psychrometric chart plots dry-bulb temperature on the horizontal axis and specific humidity (humidity ratio) on the vertical axis. The other quantities appear as slanted or curved lines.