Question Bank • QB_APE_GATE_001 MCQ • 2 Marks

Section 6: Agricultural Process Engineering

Evaporation and Drying

Subtopic: Psychrometry – properties of air-water vapour mixture

Question Statement:

Match the Psychrometric Processes in Group-I with their Chart Trajectories in Group-II: $\begin{array}{|ll|ll|}\hline \textbf{Group-I (Process)} & & \textbf{Group-II (Trajectory)} & \\ \hline \text{P. Sensible Heating} & & \text{1. Along constant wet-bulb / enthalpy line} \\ \text{Q. Sensible Cooling} & & \text{2. Horizontally rightwards at constant specific humidity} \\ \text{R. Adiabatic Humidification} & & \text{3. Horizontally leftwards at constant specific humidity} \\ \hline \end{array}$ Select the CORRECT matching combination:

Options:

  • (A) P-2, Q-3, R-1
  • (B) P-3, Q-2, R-1
  • (C) P-1, Q-2, R-3
  • (D) P-2, Q-1, R-3

Answer Key:

A

Step-by-Step Solution & Explanation

Psychrometric Process Paths: - **Sensible Heating**: Horizontally right (2). - **Sensible Cooling**: Horizontally left (3). - **Adiabatic Humidification**: Along constant enthalpy/WBT line (1). Correct match: **P-2, Q-3, R-1**.
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