Electromechanical devices are systems that combine electrical and mechanical components to perform specific tasks. They convert electrical energy into mechanical motion or vice versa. Common examples include motors, relays, and solenoids, which are used in various applications, from household appliances to industrial machinery. These devices operate based on principles of electromagnetism and mechanics. For instance, when an electric current flows through a coil in a motor, it generates a magnetic field that causes the rotor to spin, producing motion. This integration of electrical and mechanical systems allows for efficient control and automation in many technologies.