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← ScienceWhich outcome reduces generator output when blade-ice accumulates within a wind-farm array?
A)Decreased aerodynamic lift efficiency✓
B)Increased gearbox lubrication viscosity
C)Elevated thermal drag coefficient
D)Worsened nacelle yaw alignment
💡 Explanation
Decreased aerodynamic lift efficiency occurs because blade-ice phase transition increases blade roughness which triggers flow separation; therefore lift reduces, rather than the other outcomes because these depend on gearbox-temperature or yaw motor control.
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