Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 184
es. These magnetic fields assume a number of differentforms, a few of which are shown in Fig. 135. In large machines it is customary to use multipolar fieldmagnets in which any even number of poles are arrangedalternately around the armature. The magnetic circuit of amachine whose field is created… … Fig. 134 174 PKACTICAL APPLIED ELECTRICITY together at one end, as shown in the figure. (In somemachines there is no yoke in the magnetic circuit, see Fig.135 A.) (3) The pole pieces (P) are the metallic parts of themagnetic circuit next to the armature. They are usually cutto conform to the…
Electrical engineering
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