International Library of Technology · Scranton, International Textbook Co. · leaf 457
iding the space between the two winding spacesoccupied by a coil is not less than the width of the field. In addition, it will be seen that where the brushes areshifted the current in some of the armature conductors in-cluded in twice the angle of lead of the brushes is oppositein direction to that… … Fig. 1171.direction. Fig. 1171 represents a winding in which s = 10,as in Fig. 1170, w = 20, and the front and the back pitches are 1990 APPLIED ELECTRICITY. each equal to -|-9. It will be seen that one effect of givingboth pitches the same direction is to make it possible to haveboth pitches…
Electrical engineering
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