What is the main purpose of an alternator?

The main purpose of an alternator is to generate alternating current. An alternator converts mechanical energy into electrical energy through the process of electromagnetic induction. As the rotor spins within the magnetic field, it produces an alternating current output, which can be used to power electrical systems.

While stabilizing alternating current, transforming direct current, and regulating voltage levels are important functions in electrical systems, they do not describe the primary function of an alternator itself. An alternator specifically focuses on the production of alternating current, making it a crucial component in various applications, such as in automotive engines to charge the battery and power electrical systems when the engine is running.