CONTENTS xiil 



PART HI 



PAGE 



CHAPTER I. METHODS or CALCULATION OF THE ARMATURE 

 REACTIONS (DIRECT AND TRANSVERSE) OF ALTER- 

 NATORS 236 



Principles of the Theory of Two Reactions Diagram of E.M.F.'s and 

 Current of an Alternator with Unsaturated Armature and with Saturated 

 Field Magnet Diagram of Ampere-Turns in the Case of Unsaturated 

 Armature Remark No. i, Upon the Case of an Unsaturated Arma- 

 ture Remark No. 2, Upon the Subject of Diagram No. i The Case 

 of a Saturated Armature Local Corrections of the Air-Gap Due to 

 Saturation (Second Approximation) Case of Field Magnets with 

 Divided Windings Practical Calculation of Reactions Comparison 

 with Theoretical Coefficients Case of Single-Phase Alternators 

 Consequences from the Point of View of the Construction of Alter- 

 nators for Good Regulation. 



CHAPTER II. METHODS OF TESTING ALTERNATORS ACCORDING 



TO THE THEORY OF TWO REACTIONS 270 



Method No. i. When the Rigid Coupling of the Two Alternators is 

 possible Method No. 2. Applicable to a Single Synchronous Machine 

 Operating upon an Actual Conducting System Analogies between this 

 Method and that of Potier Behrend Method No. 3 For the Determina- 

 tion of Transverse Reaction (Coefficient L). 



APPENDIX A 283 



APPENDIX B 285 



APPENDIX C 287 



INDEX 291 



