Question Bank • QB_EXP_APE_PSY_036 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Psychrometry & Moist Air Thermodynamics

Subtopic: Sensible heating process on psychrometric chart

Question Statement:

During the sensible heating process shown on the chart, the dew point temperature $T_{dp}$ remains strictly unchanged because:

Options:

  • (A) The partial pressure of water vapor in the mixture remains constant
  • (B) The sensible heat ratio is zero
  • (C) The atmospheric pressure increases proportionally
  • (D) The wet-bulb depression is constant

Answer Key:

A

Step-by-Step Solution & Explanation

Dew point temperature is purely a function of partial pressure of water vapor. Since moisture content is constant, $p_v$ and hence $T_{dp}$ remain strictly constant.
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