What is meant by EXCITATION Systems ?
Asked by truth exposed, 27 Jan '13 11:50 am
Earn 10 points for answering
An electric generator or electric motor consists of a rotor spinning in a magnetic field. The magnetic field may be produced by permanent magnets or by field coils. In the case of a machine with field coils, a current must flow in the coils to generate the field, otherwise no power is transferred to or from the rotor. The process of generating a magnetic field by means of an electric current is called excitation.Answered by LIPSIKA, 27 Jan '13 11:54 am
Your vote on this answer has already been received