Poly-phase AC Generator

Some AC generators carry MORE than one coil in their armature core, with each such coil producing its own separate alternating emf -- such machines are called poly-phase generators. A generator producing two separate alternating emfs (from two separate coils) is called a two-phase generator; a generator with three separate coils, producing three separate emfs, is called a three-phase AC generator -- by far the most common poly-phase arra …