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← TechnologyWhich risk increases when an electrohydraulic actuator supporting a wind turbine blade experiences high-frequency vibrational loading?
A)Increased static shear force
B)Reduced thermal expansion stress
C)Actuator hydraulic resonance✓
D)Decreased damping coefficient
💡 Explanation
Actuator hydraulic resonance results because high-frequency loading excites resonant frequencies within the hydraulic fluid and actuator components. This leads to amplified pressure oscillations and potential instability, therefore reduced actuator control rather than increased damping, shear stress, or decreased thermal stress.
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