An AC generator is an electric generator that converts mechanical energy into electrical energy in the form of alternative EFM or alternating current. An AC generator works on the concepts of "Electromagnetic Induction". An AC generator consists of two poles i.e is the north pole and south pole of a magnet so that we can have a uniform magnetic field. There is also a coil that is rectangular in shape that is the armature. These coils are connected to the slip rings and attached to them are carbon brushes. The slip rings are insulated from each other and made from metal. The brushes are carbon brushes and one end of each brush connects to the ring and other connects to the circuit. The rectangular coils rotate about an axis that is perpendicular to the magnetic field. There is also a rapidly rotating shaft.
When the armature rotates between the poles of the magnet upon an axis perpendicular to the magnetic field, the flux which links with the armature changes continuously. Due to this, an emf is induced in the armature. An electric current goes through the galvanometer and the brushes and slips rings. The galvanometer swings between positive and negative values. This indicates that there is an alternating current flowing through the galvanometer.
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