The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 217
as the armature begins to rotate, it generates an emf.according to the right-hand rule.21 This action is exactly the-same as in a generator. 21 See Section G3, page 153. 212 I) YNA MO-ELECTRIC MACHINERY. The emf. generated is opposite to the direction of currentshown by the arrows, and is for that… … Fig. 129.—Diagram of circuits of a 4-pole shunt motor. the two would balance; there would be nothing to make thecurrent flow through the armature, and consequently no pullto keep it turning. For example, suppose the armature resis-tance of a certain motor is 0.25 ohm. and suppose that a currentof 4…
Telegraph, Wireless · Radio
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