Which of the following is a likely cause of an actuator that fails to extend or retract?

When an actuator fails to extend or retract, a likely cause is improper power supply to the valve. Actuators rely on pneumatic or hydraulic power supplied through a valve to function properly. If there’s an issue with the power supply, such as insufficient pressure, voltage drop, or incorrect connection, the actuator may not receive the necessary force to operate, leading to a failure in extension or retraction.

Maintaining a proper and stable power supply is crucial for ensuring that the actuator can perform as intended. If the power supply is compromised, it can affect the entire pneumatic system's operation, resulting in decreased performance or complete failure of the actuator to respond to commands.