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← TechnologyWhich outcome occurs when a hydraulic actuator rapidly extends under light load?
A)Internal cavitation from pressure drop✓
B)External leakage from seal wear
C)Thermal runaway from fluid friction
D)Structural failure from excessive force
💡 Explanation
When a lightly loaded actuator extends rapidly, the sudden increase in volume behind the piston causes a significant pressure drop, potentially leading to cavitation as the fluid vaporizes. Therefore, internal cavitation results because the pressure falls below the fluid's vapor pressure rather than leakage, thermal runaway, or structural failure, which arise from different operational conditions.
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