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Which outcome occurs when a turbine blade rotating within a condensing steam power plant reaches a critical cavitation number?

A)Erosion rate increases on blade surface
B)Improved thermodynamic cycle efficiency arises
C)Steam quality substantially decreases rapidly
D)Turbine's power output rises temporarily

💡 Explanation

Cavitation occurs because localized pressure drops below the liquid's vapor pressure resulting in vapor bubble formation (Cavitation). These bubbles collapse violently causing erosion. Therefore, material loss increases, rather than a power increases or steam quality improvement, because the process degrades performance.

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