I'm writing a report and i just don't under stand so can anyone explain this as simple as possible.
In general, motors have two parts, a static part and a rotating part. Each part produces a magnetic field. AC motors use the sinusoidally varying nature of the AC power supply to create a magnetic field that rotates at the supply frequency, even tho the windings themselves are static. This makes the moving part rotate. DC motors have some introduced means to reverse the magnetic field in one of its parts. For a DC motor, this might be done with brushes, where the rotating part reverses some connections, based on its position. It could also be achieved by electronic means, where the current in one part is reversed by electronic switching. In either case, it is not an AC motor because the supply is still DC and the switching frequency is not related to a supply frequency
Alternating current flows in two directions and direct current flows in one direction.
