Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 209
Figure 207.—A Large A. C. Power Motor Disassembled to ShowDifferent Parts. (Slip Ring Type.) The armature must turn fast enough to generate aC. E. M. F. almost equal to the applied E. M. F. If thefield is weak the armature must burn fast, but if it is strong … Figure 208. — Another Large A. C. Power Motor Disassembled.(Squirrel Cage Type.) SPECIFIC USES OF A. C. AXD D. C. MOTORS 199 then the armature need only turn slowly, to generate thisnecessary C. E. M. F. Therefore, since adding resistance in series with the fieldmakes the field weaker, it causes…
Physics
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