The general relationship between speed N, head H, power P and discharge Q for a centrifugal pump is_________________?
Correct answer: A. Q∝N : H∝N2 : P∝N3
- A. Q∝N : H∝N2 : P∝N3
- B. Q∝N2 : H∝N3 : P∝N
- C. Q∝N : H∝N3 : P∝N2
- D. Q∝N3 : H∝N : P∝N2
Explanation
The centrifugal-pump affinity laws for a fixed impeller diameter are Q ∝ N, H ∝ N², and P ∝ N³. These relations follow from velocity and energy scaling with impeller speed.
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