Which of the following is a key characteristic of servo motors?

Servo motors are distinguished by their ability to provide precise control over motion, which is primarily due to their feedback mechanisms. This feedback allows for continual adjustments to speed, direction, and revolutions, making them highly versatile for applications that require accurate positioning and movement. This characteristic is what sets servo motors apart from other types of motors, such as stepper motors or traditional DC motors, which may not have the same level of feedback integration.

The presence of feedback mechanisms is crucial in applications such as robotic arms, conveyor systems, and CNC machinery, where precision is essential. By continuously monitoring performance and making adjustments in real-time, servo motors can respond dynamically to changing demands, ensuring higher efficiency and accuracy in their operations. This feedback loop is a core aspect of servo motor functionality, enhancing their overall effectiveness in automated systems.

In contrast, other options present limitations or inaccuracies regarding servo motors. For instance, servo motors can operate across a range of speeds depending on the design and application, not solely at high speeds. They are designed with feedback mechanisms, contradicting the idea of operating without them, and while they are prevalent in CNC machines, they are not exclusively used in that domain, as they can be found in various applications across multiple industries.