Which device converts electrical energy into mechanical motion?

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Multiple Choice

Which device converts electrical energy into mechanical motion?

Explanation:
The main idea is energy-form conversion into physical movement. An actuator is designed to take electrical energy and convert it into mechanical motion, providing the actual movement or force in a system. Electric motors rotate, solenoids push or pull linearly, and piezo actuators produce precise micro-movements—all examples of electrical energy becoming motion. A sensor, by contrast, detects a physical quantity and outputs an electrical signal; a transmitter sends that signal onward; a valve controls fluid flow and may be driven by an actuator, but it does not convert electrical energy into motion itself.

The main idea is energy-form conversion into physical movement. An actuator is designed to take electrical energy and convert it into mechanical motion, providing the actual movement or force in a system. Electric motors rotate, solenoids push or pull linearly, and piezo actuators produce precise micro-movements—all examples of electrical energy becoming motion.

A sensor, by contrast, detects a physical quantity and outputs an electrical signal; a transmitter sends that signal onward; a valve controls fluid flow and may be driven by an actuator, but it does not convert electrical energy into motion itself.

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