Question Bank • QB_APE_EXP_097 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Size Reduction and Material Handling

Subtopic: Size separation by screening

Question Statement:

In industrial grain screen sizing, 'blinding' of screens refers to the undesirable condition where:

Options:

  • (A) Screen apertures become clogged by near-size wedge particles
  • (B) The vibrating motor burns out
  • (C) The screen deck tilts beyond its critical slope
  • (D) Grain dust obscures the view of the inspection window

Answer Key:

A

Step-by-Step Solution & Explanation

Screen blinding occurs when near-size irregular grain particles become wedged or lodged tightly inside the screen openings, progressively reducing open screen area and separation efficiency.
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