An actuator is usually a device that:
A) converts a physical variable to an electrical variable.
B) converts analog data to meaningful digital data.
C) stores digital data and then processes that data according to a set of specified instructions.
D) controls a physical variable.

Question

Quizplus · Accepted Answer

Actuators are devices designed to control or move mechanisms or systems. They typically convert energy (often in the form of electrical, hydraulic, or pneumatic) into mechanical motion, thereby controlling a physical variable such as position, velocity, or pressure.

An Actuator Is Usually a Device That