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Which outcome occurs when steam turbine blades excessively erode?

A)Decreased turbine power output
B)Increased generator magnetic field
C)Improved condenser heat transfer
D)Lowered boiler water alkalinity

💡 Explanation

The efficiency drops when blade erosion increases the surface roughness, promoting turbulence using more power; therefore the power output declines because boundary layer separation occurs rather than smooth flow.

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