Physics Ac Motor Diagram. The coil is located between the poles of two permanent magnets. I t and v t are current and voltage at time t.
If the current constantly changes direction it is called alternating current or ac. The flux in the single turn coil on the rotor surface is. Generator is an electromagnetic device which transforms mechanical energy into electrical energy.
Ac motors with ac currents we can reverse field directions without having to use brushes.
Cars use a type of ac generator called an alternator. One of the drawbacks of this kind of ac motor is the high current which must flow through the rotating contacts. Thus cosϕ is called the power factor which can range from 0 to 1. Mains electricity is an ac supply.
