CONTENTS xi 



PAGE 



203. The Rotor. 



204. Slip. 



205. Magnetomotive Force of the Rotor. 



206. E.m.f. and Flux Diagram for the Induction Motor. 



207. Proof that the Locus is a Circle. 



208. Magnetomotive Force Diagram. 



209. Stator Current Diagram. 



210. Rotor E.m.f. and Current. 



211. Rotor Input. 



212. Rotor Copper Loss and Slip. 



213. Rotor Output and Torque. 



214. Rotor Efficiency. 



215. Modification of Diagram. 



216. Interpretation of Diagram. 



217. Construction of Diagram from Test for a Three-phase Motor. 



218. Methods of Starting. 



219. Applications. 



220. Speed Control of Induction Motors. 



221. Analysis by Rectangular Coordinates. 



222. Single-phase Induction Motor. 



223. Horizontal Field at Slip S. 



224. Starting Single-phase Induction Motors. 



225. Comparison of Single-phase and Polyphase Motors. 



226. Induction Generator. 



CHAPTER VIII. 



ALTERNATING-CURRENT COMMUTATOR MOTORS 358 



227. Alternating-current Series Motor. 



228. Design for Minimum Reactance. 



229. Compensating Windings. 



230. Commutation. 



231. Repulsion Motor. 



232. Commutation. 



CHAPTER IX. 

 CONVERTERS 369 



233. Rotary Converter. 



234. Field Excitation. 



235. Ratios of E.m.f .'s and Currents. 



236. Two-phase or Quarter-phase Converter. 



237. Three-phase Converter. 



238. N-phase Converter. 



239. Wave Forms of Currents in the Armature Coils. 



240. Heating Due to Armature Copper Loss. 



241. Armature Reaction. 



242. Compounding. 



243. Starting. 



244. Frequencies and Voltages. 



245. Inverted Converter. 



246. Double-current Generator. 



247. Three-wire Generator. 



248. Frequency Converters. 



249. Induction Frequency Converter. 



250. Mercury Arc Rectifier. 



251. Operation. 



252. Currents and Voltages. 



253. Losses and Efficiency. 



