Discussion
Assertion (A): A cyclone is placed ahead of the aspiration fan rather than after it.
Reason (R): Abrasive dust and chaff passing through an impeller would wear it rapidly.
Select the correct answer from the options below.
Answer: B
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason is the design rule. Dust and chaff are abrasive and would erode an impeller running at high tip speed, so the cyclone is placed on the suction side to take the particles out before the air reaches the fan. The fan then handles clean air, and its life is measured in years rather than months.
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