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Which consequence results when rapid vaporization occurs at impeller surfaces?

A)Pump efficiency intensely drops, due to cavitation
B)Overhead power linearly decreases at rated rpm
C)System vibration decreases with damped resonance
D)Net positive suction head improves linearly

💡 Explanation

Pump efficiency dramatically decreases via cavitation because the rapid liquid-to-gas phase change causes bubbles to form and collapse. This violently erodes the impeller rather than maintaining consistent fluid flow, therefore damaging components.

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