Allied & ICAR Exam Bank • ALLIED_0593 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Engineering Properties of Grains

Subtopic: Engineering Properties of Grains

Question Statement:

The dielectric properties of agricultural grains (dielectric constant $\epsilon'$ and dielectric loss factor $\epsilon''$) are utilized commercially for:

Options:

  • (A) Rapid non-destructive moisture measurement and radio-frequency / microwave dielectric heating
  • (B) Determining grain color
  • (C) Measuring hardness on Mohs scale
  • (D) Polishing the grain pericarp

Answer Key:

A

Step-by-Step Solution & Explanation

Because water has a very high dielectric constant ($\sim 80$) compared to dry matter ($\sim 3-5$), moisture content dramatically alters electrical capacitance.
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