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Chapter I ELECTROMAGNETIC INDUCTION Art 1 Electromotive Force
Laws of Induction
Polarities of Induced Electromotive Forces
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adjusted ampere-hour ampere-turns amperes applied arma armature circuit armature current armature reaction armature-circuit resistance back pitch braking brushes calculated cause cell cent characteristic charge coil sides commutator bars conductor connected constant contactor copper losses core losses counter emf current flow curve decrease determined direction discharge drop dynamic braking effect efficiency electrical electrolyte equal equipment field circuit field current field flux field resistance field rheostat horsepower increase induced inductors input interpoles lap winding lead-acid lead-acid battery Lenz's law load conditions load current machine magnetic circuit magnetic field magnetic flux maximum method motor-generator necessary no-load normal operation overload parallel path plate position Prob rated load rated-load reduced regenerative braking result reversal rheostat separately excited series field series motor series-field shunt motor shunt-field slots starter starting Storage Battery supply switch temperature terminal voltage tion torque usually vary volts wave winding zero