Which of the following is listed as an advantage of stepper motors?

• A. Low cost
• B. Simple drive electronics
• C. Good torque
• D. All of the above are advantages

Answer: (D)

Stepper motors offer a useful mix of benefits for positioning tasks: they tend to be low cost, use simple drive electronics, and provide good torque at small increments. The low cost comes from their straightforward construction and lack of need for expensive feedback components in basic setups. Drive electronics are simple because control can be achieved with a sequence of current pulses rather than a full closed-loop servo system. They also deliver solid torque, especially holding torque when stationary, which helps maintain precise positions without complex gearing. Since these advantages commonly appear together, the option that states all of the above is the best choice. Keep in mind there are trade-offs like torque ripple and limited top speed, but these don’t outweigh the listed benefits for many applications.