General Subjects (Auxiliaries & Systems) USCG Question #675 (Set 11)

A hydraulic fluid flow control circuit, used to control linear actuator speed during retraction, with the pump operating at above maximum pressure, is known as a __________.

Official USCG Answer & Rule Citation

Correct Answer: Option D — metered-out circuit

A metered-out circuit controls actuator speed by restricting the fluid exiting the actuator. This creates backpressure, which provides smooth, controlled movement. Because the flow is restricted on the return side, the pump must work against the system relief valve, operating at maximum pressure to maintain the circuit.

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