Which statement correctly describes servo motors in comparison to standard induction motors?

• A. Servo motors provide simpler speed control without feedback
• B. Servo motors provide precise position/velocity control with feedback
• C. Induction motors provide precise position control with feedback
• D. Induction motors are used exclusively in servo applications

Answer: (B)

The concept tested is how servo systems achieve precise motion through feedback. A servo motor is part of a closed-loop system that includes a motor, a feedback device (like an encoder or resolver), and a drive that continuously compares the commanded position or speed with what’s actually happening and then adjusts torque to correct any error. That feedback is what lets servo motors deliver highly accurate position and velocity control, even under changing loads. Standard induction motors, by contrast, are general-purpose and typically run with open-loop control; they don’t inherently provide precise position feedback or guaranteed accuracy without additional sensors and a dedicated control loop. They’re great for robust, efficient operation in applications like fans or pumps, but they’re not designed for the precise motion control that servo systems provide. Thus, a servo motor’s ability to offer precise position and velocity control with feedback makes it the best description.