Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 61
eoutside of the wires will furnish sufficient resistance to practicalyprevent the eddy currents passing from wire to wire. THEORY OF THE ARMATURE 273 Ques. How should an armature core be laminatedto avoid eddy currents? Ans. It should be laminated at right angles to its axis. Fig. 292 shows the… … Fig. 293.—Armature core with a few laminations showing effect on eddy currents. In practicethe core is made up of a great number of thin sheet metal discs, about 18 gauge, whichintroduces so much resistance between the discs that the formation of eddy currents isalmost entirely prevented. In fig.…
Electrical engineering
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