A magnetic field is created in what part of an alternator?

In an alternator, the magnetic field is generated in the rotor. The rotor is the rotating part of the alternator, which typically consists of a set of electromagnets or permanent magnets. When the rotor turns, it creates a rotating magnetic field that interacts with the stator windings. This interaction is crucial because it induces an alternating current (AC) in the stator windings due to electromagnetic induction.

The stator, on the other hand, contains the coils of wire that produce the electrical output. The diodes are components that convert the AC generated in the stator into direct current (DC), while the drive-end frame provides structural support but does not contribute to the generation of the magnetic field. Understanding the role of the rotor in creating the magnetic field helps clarify how electric current is generated in the alternator system.