CONTENTS IN- 

 PAGE 



Alternator Construction. .. Ill 



56. Stator or Armature Ill 



57. Rotating-field Structure 115 



Alternator Electromotive Forces and Outputs 120 



58. Generated Electromotive Force 120 



59. Phasing Alternator Windings 125 



60. Rating of Alternators 126 



CHAPTER VI 



ALTERNATOR REGULATION AND OPERATION 128 



Alternator Regulation 128 



il. Armature Reactance 129 



62. Armature Resistance 130 



M. Armature Reaction 132 



64. Armature Impedance Drop 137 



65. Alternator Regulation 141 



66. Synchronous Impedance Method, or Electromotive Force 



Method 142 



67. Three-phase Application 150 



68. Regulation of a Y-connected Generator 152 



69. Regulation of a Delta-connected Generator 153 



70. Magnetomotive Force Method 155 



71. The A 1 I-:. E. Method 159 



72. The Tirrill Regulator 161 



Parallel Operation of Alternators 163 



74. Synchronizing 168 



Hunting of Alternators. . 171 



CHAPTER VII 



IUKMKK 172 



7i The Transformer Principle 172 



77. Induced Klect romotivc Force 173 



78. Ampere-turns . 175 



79. Leakage Reactance . 178 

 MI met Vector Diagram IMI 

 U, Simplified Diagram 182 



Kquivalent Resistance and Reactance . 184 



' >|>en-circuit Test . . 180 



84. Short-circuit Test I'.H 



Regulation an. I KHicirnc\ I'.i.; 



86. Con- and Shell-type Transformers !'.:, 



87. m L9fl 



88. Cooling nrmer- I'.t'.i 



