68 pages matching series field in this book
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ELECTRIC AND MAGNETIC CIRCUITS
Construction of DC Dynamos
29 other sections not shown
adjusted air gap alternating current ampere-turns amperes anode armature current armature reaction Article battery brushes Calculate capacitance capacitor cathode cell cent coil compound conductors connected constant converter copper loss core losses counter emf curve cycles d-c motor decrease dielectric direct current discharge effect electric charge electrons energy Equation excitation field current field winding flux density full load full-load current grid Hence impressed voltage increased induction motor input insulation lagging machine magnetic circuit magnetic field maximum negative neutral no-load ohms operating output parallel path phase plate polarity positive potential power factor Prob PROBLEMS ON CHAPTER produced reactance rectifier resistance result rheostat rotation rotor self-induction series circuit series field series motor shown in Fig shunt motor shunt-field single-phase speed starting torque stator supply switch synchronous motor temperature terminal voltage three-phase three-wire tion torque total flux transformer tube volts wattmeter wire zero