Which three actions correctly describe the functions of a servomechanism, given a task where the position of the controlled device is to be regulated? 1)The controlled device moves the servo motor to the desired position.

2)The controlled device generates a feedback signal that always gives its current position.

3)The amplifier sends an error-correction signal to the error detector.

4)The command device is given data about a desired position for the controlled device.

5)The error detector compares the command signal with the feedback signal.