Body: "Dynamoelectric machinery" is the examination of dynamo is an electrical generator that creates direct current using a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter.
Williams, L. Pearce, “Michael Faraday are a few specialists of "Dynamoelectric machinery".
Some motivations are Today, the simpler alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using power rectification devices (such as vacuum tubes or more recently via solid state technology) is effective and usually economical.
Several topics in "Dynamoelectric machinery" include The first dynamos, Dynamo self excitation, Practical designs.