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GATE 2019 MT – Question 21

Transport Phenomena and Rate Processes · Fluid flow and momentum transfer · 1 mark · Multiple choice

Coarse suspended particles are separated from flowing gas in a dust catcher. With all other factors equal, which configuration gives the greatest gas–solid separation?

Diagram for GATE 2019 MT question 21
  1. Configuration A
  2. Configuration B
  3. Configuration C
  4. Configuration D

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Show answer and explanation

Correct answer: (A) Configuration A

Explanation

Configuration A delivers the gas–particle stream deeply downward and takes gas out near the top. Coarse particles continue downward by inertia and gravity while gas turns upward, favouring separation. The lower side outlets in the other arrangements more readily carry particles with the gas. Thus A.

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