Question Bank • QB_EXP_APE_PSY_018 MSQ • 2 Marks

Section 6: Agricultural Process Engineering

Psychrometry & Moist Air Thermodynamics

Subtopic: Sensible heating process on psychrometric chart

Question Statement:

Which of the following air properties INCREASE during the sensible heating process path from State A to State B in the accompanying diagram?

Options:

  • (A) Dry bulb temperature
  • (B) Wet bulb temperature
  • (C) Humid volume
  • (D) Vapor pressure of water in air

Answer Key:

A, B, C

Step-by-Step Solution & Explanation

Dry bulb temp, wet bulb temp, and humid volume all increase. Vapor pressure remains constant because humidity ratio is constant ($p_v = \frac{\omega P}{0.622 + \omega}$).
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