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Which risk strongly increases when flow transitions to turbulence in centrifugal pumps?

A)Decreased pump efficiency
B)Higher impeller cavitation
C)Reduced net positive suction
D)Surge tank resonance

💡 Explanation

Higher impeller cavitation occurs because increased turbulent kinetic energy near the impeller's inner surface lowers local pressure via Bernoulli's principle, dropping under the fluid's vapor pressure. Therefore, cavitation probability will become high rather than decreased efficiency because of pressure drops and energy dissipation.

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