Hawkins Electrical Guide v. 02 (of 10) Questions, Answers, & Illustrations, A progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications

The electrical energy delivered by the dynamo must be obtained from a steam engine, gas engine, or other power; the mechanical energy obtained from the motor comes from the ener...

To connect up rightly the inductors on an armature so as to produce a desired result is a simple matter in the case of ring winding, for bipolar or multipolar machines. It is a...

=Current Distribution in Ring and Drum Armatures.=--In studying the actions and reactions which take place in the armature, the student should be able to determine the direction...

The armature of a dynamo has been defined as: _a collection of coils of wire wound around an iron core, and so arranged that electric currents are induced in the wire when the a...

=Switches.=--A switch is a device by means of which an electric circuit may be opened or closed. There are numerous types of switch; they may be either single or multi-pole, sin...

The act of commutation needs special study. If it be incorrectly performed, the imperfection at once manifests itself by sparks which appear at the brushes. In the study of this...

=General Conditions Governing Selection.=--In any particular case, the voltage, current capacity, and type of dynamo selected will depend upon the system of transmission or dist...

With respect to construction, brushes may be broadly classified as: 1, those made of metal, and; 2, those made of carbon. There are several varieties of metal brush, such as:

The armature of a dynamo consists of coils of insulated wire wound around an iron core, and so arranged that electric currents are induced in the wire when the armature is rotat...