Electro-Hydraulics and Mechanical Systems Practice Test 2026 - Free Practice Questions and Study Guide

Hydraulic motors convert hydraulic power into rotary mechanical movement, and valves control the flow and pressure to produce that rotation. In a hydraulic system, a pump creates the pressurized fluid and a valve network directs it to the motor, regulating speed and direction by adjusting flow and pressure. This rotary motion is the opposite of what hydraulic actuators (like cylinders) do, which is mainly linear motion. Reservoirs simply store fluid, while pumps generate the power. So the drive components that use hydraulic power to create spinning motion are hydraulic motors.