An axial flow ventilation fan is being driven by an AC motor.
The fan is operating at its maximum rated flow rate.
How will the fan motor current initially change if the flow rate through the fan is decreased by partially closing a discharge damper?
A. The motor current will increase in accordance with the centrifugal pump laws.
B. The motor current will increase, but not in accordance with the centrifugal pump laws.
C. The motor current will decrease in accordance with the centrifugal pump laws.
D. The motor current will decrease, but not in accordance with the centrifugal pump laws.
Show Answer
Answer: B
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