Which of the following systems relies on a hydraulic pump for operation?

The power steering system relies on a hydraulic pump for its operation. In this system, the hydraulic pump generates hydraulic pressure, which assists the driver in turning the steering wheel with less effort. This is particularly useful in larger vehicles or those with heavier steering loads, where manual steering would require considerably more force to maneuver. The hydraulic pump draws hydraulic fluid from a reservoir and sends it to a power steering gear or rack, where this pressure helps move the steering mechanism more easily in response to the driver’s inputs.

In contrast, manual steering operates purely based on the physical effort applied by the driver, without any hydraulic assistance. Independent suspension systems do not specifically rely on a hydraulic pump; instead, they use various components like coil springs and control arms to allow each wheel to move independently. Additionally, while disc brake systems can utilize hydraulic principles, they do not operate using a hydraulic pump in the same manner as power steering does. Instead, they rely on hydraulic pressure created within the brake lines to activate the brake calipers when the brake pedal is pressed. Thus, the clear distinction of the power steering system’s reliance on a hydraulic pump sets it apart from the other options.