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← ScienceWhich risk increases when a closed Rankine cycle steam turbine inlet encounters superheated steam?
A)Blade erosion accelerates substantially✓
B)Condenser backpressure steadily increases
C)Generator output becomes unstable
D)Thermal efficiency sharply plummets
💡 Explanation
Blade erosion accelerates because water droplets cause cavitation; this momentum exchange creates surface pitting. Film boiling, a type of Nucleate boiling, at the blade surface then prevents quick vaporisation therefore more cavitation, rather than decreased efficiency under ideal conditions.
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