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Which outcome occurs when sonic choke appears unexpectedly in a proportional valve?

A)Actuator speed becomes unpredictable
B)Systemic fluid overheating is present
C)Valve spool displacement plateaus
D)Complete loss of actuator movement

💡 Explanation

Unpredictable actuator speed results from sonic choke because the valve reaches its maximum flow capacity regardless of increased control signals; therefore, the flow is limited rather than increasing linearly, leading to erratic movements, unlike a pressure plateau.

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