Discussion
Assertion (A): Mass flow hoppers are used where the material can spoil in place.
Reason (R): In mass flow all the material moves whenever any is withdrawn, leaving no stagnant regions.
Select the correct answer from the options below.
Answer: A
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason is the justification. Mass flow moves all the material whenever any is withdrawn, so nothing sits in the bin indefinitely and the discharge is first-in first-out. Funnel flow leaves stagnant regions where material can cake, spoil or become infested, which is why mass flow is specified for anything with a shelf life.
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