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Which outcome dramatically reduces heat engine efficiency when water transitions to steam at high pressure?

A)Increased turbine blade stress corrosion
B)Reduced condenser heat transfer rate
C)Lower overall cycle thermal resistance
D)Decreased working fluid mass flow

💡 Explanation

Increased turbine blade stress corrosion occurs via pitting because superheated zones during the vaporization phase transition concentrate impurities; therefore corrosive attack accelerates, rather than the alternatives of only affecting the heat transfer or mass flow.

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