Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 107
ound the desired paththrough pole pieces and armature, but will take a paththrough the air and be of no utiUty in creating E.M.F. inthe revolving armature. Fig. 61 roughly represents someof the paths such lines may take. FIELD MAGNETS. 95 If ^t be the total flux set up by the field coils, and… … Fig. 6i. In practice, the value of d ranges from 1.25 to 1.5 inbipolar dynamos, depending upon the design. For multi-polar machines, the values of the dispersion coefficientvary from 1.3 in small dynamos of about 2 K.W. to i.iin large machines of about 500 K.W. output. Increasing the field…
Electric machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
