Allied & ICAR Exam Bank • ALLIED_1273 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Material Handling Equipment

Subtopic: Pneumatic Conveying

Question Statement:

In dilute-phase positive-pressure pneumatic conveying of whole grains through pipelines, the superficial air velocity must exceed the:

Options:

  • (A) Saltation velocity of the particles
  • (B) Speed of sound
  • (C) Zero velocity
  • (D) Thermal conductivity of the pipe

Answer Key:

A

Step-by-Step Solution & Explanation

Saltation velocity is the minimum horizontal conveying gas velocity required to keep particles airborne in suspension; below it, grains drop and form saltating dune plugs, clogging the line.
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