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 When does the particle become suspended in expanded bed?
  • a)
    When superficial velocity is greater than critical velocity
  • b)
    When superficial velocity is less than critical velocity
  • c)
    When superficial velocity is equal to critical velocity
  • d)
    When superficial velocity is constant
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
When does the particle become suspended in expanded bed?a)When superfi...
Explanation: During back washing, the bed remains fixed at low fluid velocity and as the superficial velocity increases, the lighter particles move upward and when this velocity equals the critical velocity, the particle becomes suspended.
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When does the particle become suspended in expanded bed?a)When superficial velocity is greater than critical velocityb)When superficial velocity is less than critical velocityc)When superficial velocity is equal to critical velocityd)When superficial velocity is constantCorrect answer is option 'C'. Can you explain this answer?
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