Atkinson, Albert Algernon, 1867- [from old catalog] · New York, D. Van Nostrand company · leaf 241
that the depth of winding is iinch. Hence the mean turn = 32 = 2§ feet. Total length of wire each core = 6200 feet. The 41.6 ohms must be the hot resistance of the field,making about 37 ohms cold, which corresponds to No. 18wire = 40 mils bare = 55 mils d.c.c. Assume core length = 6 inches… … Fig. 20. Hence it will not be necessary to modify our assumeddimensions except for symmetry in our drawing. Figs.20 and 21 show the general dimensions of the finishedmachine. Volts drop in the armature = 0.0525 X 40 = 2.1. ELEMENTS OF DYNAMO DESIGN 221 Hence the series ampere-turns to compensate…
Electricity
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