Which statements are true regarding the types of DC motors?

The identification of the three basic types of DC motors—series, shunt, and compound—is accurate and inclusive of key characteristics that differentiate them. Series motors connect the field windings in series with the armature. This configuration allows for high starting torque, which makes them suitable for applications requiring high power when starting from rest. Shunt motors, on the other hand, have field windings connected in parallel with the armature, providing better speed control and efficiency in operation, especially under varying loads. Compound motors incorporate both series and shunt winding features, combining the advantages of both types and allowing for versatility in applications.

Recognizing the various types of DC motors is essential for understanding their applications, control methods, and operational characteristics in various scenarios, including those in aviation where motor performance is critical. The broad classifications help engineers and technicians to select the appropriate motor based on specific performance requirements such as starting torque, speed regulation, and load handling capacities.