Question 165General Subjects - Assistant Engineer70% to pass
A hydraulic fluid flow control circuit, controlling linear actuator speed during extension, with the pump operating at system pressure, is known as a _______________.
AI Explanation
The correct answer is B) metered-in circuit.
In a metered-in circuit, the hydraulic fluid flow to the linear actuator is controlled by a metering valve, which restricts the flow into the actuator. This allows the system pressure to remain constant while controlling the extension speed of the actuator. The pump operates at the system pressure, and the metering valve regulates the flow into the actuator, resulting in a "metered-in" circuit.
The other options are incorrect because:
A) Metered-out circuit controls the flow out of the actuator, not the flow into it.
C) Bleed-in circuit involves bleeding off some of the fluid flow, which is not the case here.
D) Bleed-off circuit also involves bleeding off fluid, rather than controlling the flow into the actuator.
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