Allied & ICAR Exam Bank • ALLIED_0615 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Psychrometry and Grain Drying

Subtopic: Psychrometry and Grain Drying

Question Statement:

The 'critical moisture content' ($M_c$) in a drying curve marks the transition between:

Options:

  • (A) Constant rate drying period and falling rate drying period
  • (B) Falling rate and equilibrium
  • (C) Free water and bound ice
  • (D) Warm-up and constant rate

Answer Key:

A

Step-by-Step Solution & Explanation

Critical moisture content is the boundary where free surface water is exhausted, causing drying rate to fall as internal diffusion resistance begins to dominate.
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