Chicago : [Popular Engineering Pub. Co.] · leaf 773
d place it be- the pole pieces of the field with an en- tween the poles (N) and (S) so as to cut gine, or turbine, a current will start from one side of the commutator, thence to the positive brush around the fields out to the line, across each lamp, motor, etc. (see Fig. 6), back to the negative… … FIG. f. incoming current in passing into the ma- these lines of force, you are at the start- chine is bifurcated, that is to say. one ing point of the armature. part travels from the positive around the Revolve this piece of wire, which we'll field — over a winding perhaps a mile call an armature…
Electricity
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