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Which risk increases when maintaining a closed Rankine cycle near its cavitation limit?

A)Steam leakage escalates rapidly
B)Turbine blade erosion accelerates
C)Heat exchanger efficiency drops
D)Pump motor overheating intensifies

💡 Explanation

Extremely low local pressure within the working fluid encourages bubble formation. Vapor-phase bubble collapse against the turbine surfaces via the cavitation mechanism causes pitting and therefore blade erosion accelerations, rather than leakage, heat loss or motor overload because these scenarios involve separate physics.

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