Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 255
ent flows in the encircling wire. For instance,let it be supposed that a bar of iron is wound clockwise withinsulated wire, and the current enters from the left-hand side. 238 WORKROOM EQUIPMENT then the right end of the bar is its north pole; when the current is reversed, entering from the right,… … Fig. 206. — Diagrammatic Elevation ofElectric Motor. 2. The armature, in which the polarity is continually beingchanged. 3. The commutator, by which the direction of the currentin the armature is reversed, thus changing its polarity. Fig. 206 shows the diagrammatic elevation of an electricmotor. It…
Metal-work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
