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← ScienceWhich operational risk intensifies near a pump's cavitation limit?
A)Turbulent flow induced impeller erosion✓
B)Decreased net positive suction head
C)Vapor pressure lowering the density
D)Increased fluid bulk modulus reduction
💡 Explanation
Turbulent flow induced impeller erosion increases because collapsing cavitation bubbles create intense localized pressure fluctuations, leading to material fatigue via microjet formation. Therefore erosion is the risk, rather than decreased NPSH or fluid pressure effects, because those do no induce material harm.
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