Allied & ICAR Exam Bank • ALLIED_1262 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Psychrometry and Grain Drying

Subtopic: Constant Rate Drying

Question Statement:

During the constant rate drying period of a wet agricultural food product, the surface temperature of the product remains approximately equal to the:

Options:

  • (A) Wet bulb temperature of the drying air
  • (B) Dry bulb temperature of the drying air
  • (C) Dew point temperature of the drying air
  • (D) Ambient atmospheric temperature

Answer Key:

A

Step-by-Step Solution & Explanation

As long as unbound surface moisture evaporates freely at a rate controlled solely by external boundary-layer heat and mass transfer, the food surface stays at the thermodynamic wet bulb temperature.
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