Direct-current Machinery |
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Common terms and phrases
air gap ampere-hour ampere-turns Amperes applied arma armature circuit armature current armature reaction armature-circuit resistance back pitch braking calculated cell cent characteristic charge coil sides commutator bars compound motor conductor connected constant contactor copper losses core losses counter emf current flow Cutler-Hammer decrease demagnetizing determined discharge drop dynamic braking effect of armature efficiency electrical field circuit field current field flux field resistance field rheostat full-load horsepower horsepower output increase inductors interpole lead-acid battery load conditions machine magnetic circuit magnetic field magnetic flux method motor speed motor-generator necessary no-load normal operation overload parallel path plate pole Prob rated load rated-load reduced regenerative braking resistor result reversal separately excited series field series motor series-field shunt motor shunt-field slots speed regulation starter starting Storage Battery supply switch temperature terminal voltage tion torque usually vary volts zero