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Which process limits power extraction during steam turbine operation?

A)Condensate-induced blade trailing edge erosion
B)Thermal fatigue of coupling bolts
C)Gland seal failure due to superheat
D)Low pressure stage diaphragm cracking

💡 Explanation

Condensate causes erosion limiting the extraction, because water droplets form via homogeneous nucleation as steam expands and cools; therefore, material is removed rather than vapor continuing to expand while doing work, especially damaging the trailing edge impacting pressure.

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