Which device is used to convert electrical input into mechanical movement to drive actuators?

Which device is used to convert electrical input into mechanical movement to drive actuators?

• A. Proximity sensor
• B. Solenoid directional valve
• C. Photoelectric sensor
• D. Indicator lamp

Answer: (B)

Electromechanical conversion to drive actuators is at work here. A solenoid uses electrical current to create a magnetic force that moves a plunger or valve spool. In a solenoid directional valve, that motion shifts the valve to change the path of compressed air or hydraulic fluid, which then powers and moves the actuator. The coil’s electrical signal is directly converted into a mechanical action that causes the actuator to move. The other devices are sensing or indication tools and do not provide the mechanical drive required to actuate a system.

Electromechanical conversion to drive actuators is at work here. A solenoid uses electrical current to create a magnetic force that moves a plunger or valve spool. In a solenoid directional valve, that motion shifts the valve to change the path of compressed air or hydraulic fluid, which then powers and moves the actuator. The coil’s electrical signal is directly converted into a mechanical action that causes the actuator to move.

The other devices are sensing or indication tools and do not provide the mechanical drive required to actuate a system.