What is the main rotating component of a DC generator called?

The main rotating component of a DC generator is called the armature. The armature is typically made up of coils of wire wound around a core, and it plays a crucial role in generating electrical energy. When the armature spins within a magnetic field, it induces an electromotive force (EMF) due to electromagnetic induction. This process is essential for converting mechanical energy into electrical energy, which is the primary function of a DC generator.

In contrast, the stator refers to the stationary part of the generator, which usually houses the field coils or permanent magnets that create a magnetic field. The rotor, while a general term for a rotating part in machinery, does not specifically refer to the armature in the context of DC generators. The field coil is also part of the generator's construction, but it is stationary and creates the magnetic field needed for the armature’s operation. Therefore, the armature is the correct term for the main rotating component in this type of generator.