Question Bank • QB_APE_MAT_006 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Size Reduction and Material Handling

Subtopic: Cleaning and grading

Question Statement:

A specific gravity separator separates granular agricultural mixtures primarily on the basis of differences in:

Options:

  • (A) Particle true density and buoyancy under stratified fluidization
  • (B) Particle aerodynamic drag coefficient only
  • (C) Kernel length and width alone
  • (D) Dielectric constant and surface electrical capacitance

Answer Key:

A

Step-by-Step Solution & Explanation

A specific gravity separator stratifies mixtures on an inclined, vibrating porous deck using upward air flow. Denser particles sink to the deck surface and are moved uphill by vibration, while lighter particles float and slide downhill by gravity.
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