An induction motor uses a magnetic field on School Bus Corona is real but so are these bills #back2work shirt the rotor of an induction motor that’s created by an induced current. The other type of AC motor is called a synchronous motor and rotates precisely at the supply frequency or on a sub-multiple of the supply frequency. A synchronous motor is able to operate with precision supply frequency because it doesn’t reply on induction. The magnetic field on a synchronous motor is generated by current delivered through slip rings or a permanent magnet. Synchronous motors run faster than induction motors because the speed is reduced by the slip of the asynchronous motor.
DC electric motors are powered from direct current School Bus Corona is real but so are these bills #back2work shirt (DC) power and are mechanically commutated machines. DC electric motors have a voltage induced rotating armature winding, and a non-rotating armature field frame winding that is a static field, or permanent magnet. DC electric motors use different motor connections of the field and armature winding to produce different speed and torque regulation. Unlike AC electric motors, DC electric motor speed can be controlled within the winding by changing the voltage applied to the DC motor armature, or by adjusting the field frame current. Most DC electric motors today are manufactured to be controlled with industrial electronic DC drives. DC electric motors are still used in many applications across the globe such as paper producing machines, and steel mill rolling machines.