xiv LIST OF ILLUSTRATIONS 



138. Efficiency Test of Two Similar Induction Motors 



139. Diagram of D6ri Winding for Rotors 



140. To illustrate Phase Relation of Stator and Rotor Currents in Induction 



Motor and Generator 220 



141. Vector Diagram of Induction Generator 221 



142. Generalized Circle Diagram 222 



143. Curves derived from Circle Diagram 223 



144. To illustrate Theory of Single-phase Induction Motor .... 228 



145. To illustrate Theory of Single-phase Induction Motor .... 233 



146. Torque-speed Curves of Single-phase Induction Motor .... 234 



147. Vector Diagram of e.m.f.'s in Consecutive Coils 237 



148. Polygon Construction for Resultant e.m.f 238 



149. Construction for Voltage Ratio in Rotary Converter .... 238 

 150 and 151. To illustrate Heating of Single-phase Converter .... 243 



152. To illustrate Heating of Converter with N Slip-rings .... 247 



153. Showing Relative Rate of Heat Production in Converter with Varying 



Number of Slip-rings 249 



154. Connections of Six-phase Converter 252 



155. Connections of Twelve-phase Converter ....... 253 



156. Damping Circuit of Rotary Converter ....... 254 



157. Connections of Induction Regulator 255 



158. Automatic Regulation of Converter 256 



159. Connections of Compensated Induction Motor 260 



160. Equivalent of Compensated Induction Motor 261 



161 and 162. Commutator Connections of Heyland Alternator . . . 268 



163. Connections of Heyland Compounded Alternator 269 



164. Diagram of Connections of Series Motor 272 



165. Vector Diagram of Series Motor 273 



166. Circle Diagram of Series Motor 274 



167. Final's Design for Magnet of Series Motor 276 



168. Compensated Series Motor . . 277 



169. Compensated Series Motor 277 



170. Repulsion Motor 279 



171. Deri's Arrangement of Brushes for Repulsion Motor .... 281 



172. Latour's Arrangement of Brushes for Repulsion Motor . . . .281 



173. Diagram of Compensated Repulsion Motor 282 



174. Latour's Arrangement of Brushes as applied to Compensated Repulsion 



Motor 283 



175. Connections of Winter-Eichberg Motor 283 



176. Connections of Atkinson's Motor 284 



177. Diagram of Schiiler Motor 



178. Diagram of Fynn Motor 285 



