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Which risk increases where pump cavitation erodes impeller blades?

A)Suction pressure declines noticeably
B)Flow rate fluctuates dramatically
C)Net Positive Suction Head decreases
D)The Reynolds number locally increases

💡 Explanation

Fluctuating flow increases because vapor bubbles from cavitation collapse suddenly via the **Rayleigh-Plesset equation**, generating powerful localized jets; therefore, flow becomes erratic, rather than predictable declines under different conditions.

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