Which of the following are major parts of a DC motor?

A DC motor primarily consists of several key components that work together to convert electrical energy into mechanical energy. The armature is the rotating part of the motor where the current flows and creates a magnetic field. The field assembly is crucial as it provides the necessary magnetic field to interact with the armature's magnetic field, enabling motion. The brush assembly consists of brushes that conduct current to the rotating armature while allowing it to turn freely and maintain contact with the commutator, which switches the direction of current flow in the armature winding to ensure continuous rotational motion. The end frame supports and houses these components, providing structural integrity to the motor assembly.

This combination of components is essential for the operation of a DC motor, as they collectively enable the conversion of electrical energy into rotational mechanical energy. Understanding these parts is fundamental in grasping how DC motors function and are utilized in various applications.