Which phenomenon reduces performance when high-pressure steam undergoes expansion across turbine stages?

A)Blade surface tensile strength failure

B)Fluid boundary layer momentum increase

C)Condensation-induced shockwave formation✓

D)Volumetric expansion creating backpressure

💡 Explanation

Condensation releases latent heat to the last few turbine stages. Reheated fluid immediately expands. The effect, spontaneous condensation, creates shockwaves because liquid suddenly emerges; therefore, shockwaves greatly reduce efficiency, rather than other forms of component failure.

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Which phenomenon reduces performance when high-pressure steam undergoes expansion across turbine stages?

💡 Explanation

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