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← ScienceWhich effect occurs when a centrifugal pump operates far from its best efficiency point, causing internal recirculation?
A)Increased cavitation erosion✓
B)Decreased impeller stress
C)Stall flutter destabilization
D)Enhanced flow laminarization
💡 Explanation
Increased cavitation erosion occurs due to pressure fluctuations calculated via the Euler Pump equation, yielding locally low-pressure zones. Because cavitation bubbles form and implode then, pitting on the impeller intensifies, therefore, rather than decreasing material stress or enhancing flow.
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