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FRAMES AND ENCLOSURES
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amperes Amplidyne anode applications armature circuit armature coils armature current armature winding arrangement ball bearing belt branch circuit brush material button cause cent Check closed coil side commutator surface compound motor conductor contactor control circuit copper counter electromotive force current flow d-c motor designed diagram direct current direct current motor disconnecting means drive dynamic braking electronic energized exciter field circuit field coils field poles field winding frame full load full-load current heat horsepower ignitron increase installation insulating material interpoles lap winding lever machine magnetic field magnetic flux mechanical mica National Electric Code necessary neutral normal Ohm's law ohms output overload pole pieces position power loop protection rated relay resistor reversing rheostat rotating Rototrol segments series field series motor shaft shown in Fig shunt motor slots speed control starter starting supply line switch terminals thyratron torque tubes usually varnish voltage volts Ward Leonard wire