viii CONTENTS 



CHAPTER X 



PAGE 

 001 



THE INDUCTION MOTOR 



1 Construction, single phase and polyphase. 2. Development of 

 rotating magnetic field. 3. Development of torque. 4. Rotor 

 speed. 5. Starting characteristics. 6. Running characteristics. 

 7 Effect of rotor resistance upon operating characteristics. 8. 

 Speed control. 9. Single phase induction motor. 10. Use of induc- 

 tion motor as induction generator. 



CHAPTER XI 



COMMUTATING A-C. MOTORS 352 



1. The single-phase series motor. 2. The repulsion motor. 



3. The compensated repulsion motor. 



CHAPTER XII 



SYNCHRONOUS CONVERTER OTHER RECTIFYING DEVICES 367 



1. Function and field of use of the synchronous converter. 2. 

 Principles involved. 3. Voltage ratio for various numbers of phases. 



4. Current forms in various coils. 5. Heating of coils. 6. Capacity 

 Variation with number of phases. 7. Methods for starting. 

 8. Compounding by series field and line inductance. 0. Com- 

 pounding by synchronous booster. 10. The auxiliary pole syn- 

 chronous converter. 11. Motor-generator sets. 12. Vibrating 

 rectifier Rotating commutator rectifiers. 13. The mercury :i re- 

 rectifier. Principle of operation. 14. Service to which arc rec- 

 tifier is adapted. 15. Operating characteristics. 



CHAPTER XIII 

 POLYPHASE POWER 393 



1. Polyphase power compared with single phase power. 2. 

 Polyphase power for transmission. 3. Polyphase machinery com- 

 pared with single-phase machinery. 4. Grouping of apparatus on 

 a three-phase system. 5. Polyphase transformation. 6. Power 

 measurement in polyphase circuits. 



