Which condition indicates that a proportional valve in a hydraulic control system experiences excessive spool stiction?

💡 Explanation

When spool stiction is excessive, breakaway friction is higher, therefore hysteresis degradation of motion control occurs, leading to increased settling time during step response due to poor responsiveness. Therefore, settling time is increased, rather than elevated pressure, reduced flow, or humming which each occur due to other system failure conditions.

• Which risk increases when a distribution transformer operates continuously with impedance value far exceeding design specifications?
• Which outcome occurs when a hydraulic actuator in a high-speed robotic arm experiences internal obstructions?
• Which outcome occurs when a microwave antenna array's elements fail calibration?
• In a robotic arm executing a complex path, which outcome occurs when limited computational precision affects inverse kinematics?
• Which consequence results when sensor inaccuracy causes undetected position drift in an industrial robot?
• Which outcome occurs when an engine's fuel injectors experience varnishing from fuel oxidation?