The standard manual of dynamos and practical application of dynamo-electric machinery (1915)
MacFadden, Carl K. [from old catalog], Ray, William D., [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 22
e magnet MAGN^ISM AND INDUMION. 17 called the positive end and taking a path through the airor some magnetic material back to the other end of thecoil called the negative end. These little loops arethrown out from the end of the coil and will follow theeasiest path back to the other end, thus… … FIGURE 3.—KlvKCTRO-MAGNET AND ARMATURE SHOW-ING WNES OF MAGNETISM. If a piece of iron or steel is placed in such a positionwith relation to the coil as to be in the magnetic influ-ence or * Afield, a large number of these lines of magnet-ism will take the path through the iron in preference tothat…
Electrical engineering · Electric machinery
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