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Which outcome occurs when a hydraulic actuator in heavy machinery experiences high-cycle fatigue?

A)Gradual crack propagation and failure
B)Immediate seizure of the piston
C)Increased fluid bulk modulus effect
D)Decreased actuator thermal efficiency

💡 Explanation

High-cycle fatigue causes gradual crack propagation and eventual rod failure because repeated stress reversals initiate micro-cracks that accumulate, therefore creating a stress concentration leading to component failure, rather than causing an immediate piston seizure or affecting efficiency parameters.

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