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Which effect initiates component failure within high-speed mixing impellers?

A)Vortex shedding induces resonant vibration
B)Cavitation erosion increases surface roughness
C)Hydraulic jump generates localized pressure
D)Laminar separation causes lift reduction

💡 Explanation

Cavitation erosion causes impeller failure, because the intense pressure fluctuations from turbulent collapsing voids mechanically attack localized surfaces, rather than pressure alone. Therefore, cavitation increases erosion; rather than vortex shedding being dominant at that point.

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