EXCITATION

Excitation

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.

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excitation

Noun

  1. The act of exciting or putting in motion; the act of rousing up or awakening.
  2. The act of producing excitement (stimulation); also, the excitement produced.
  3. The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation
  4. The change in state as an excited state is formed by the absorption of a quantum of energy


The above text is a snippet from Wiktionary: excitation
and as such is available under the Creative Commons Attribution/Share-Alike License.

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