Alternator Rotor

THE ROTOR IS A MOVING COMPONENT OF AN ELECTROMAGNETIC SYSTEM IN THE ELECTRIC MOTOR, ELECTRIC GENERATOR, OR ALTERNATOR. ITS ROTATION IS DUE TO THE INTERACTION BETWEEN THE WINDINGS AND MAGNETIC FIELDS WHICH PRODUCES A TORQUE AROUND THE ROTOR'S AXIS
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ROTOR ASSEMBLY. THE ROTOR ASSEMBLY CONSISTS OF A ROTOR SHAFT, A WINDING
AROUND AN IRON CORE, TWO POLE PIECES, AND SLIP RINGS. THE ROTOR IS PRESSED
INTO THE CORE. SIX-FINGERED, MALLEABLE, IRON POLE PIECES ARE PRESSED ONTO THE
SHAFT AGAINST EACH END OF THE WINDING CORE. THEY ARE PLACED SO THAT THE
FINGERS MESH BUT DO NOT TOUCH. WHEN DIRECT CURRENT IS PASSED THROUGH THE
FIELD COIL WINDING, THE FINGERS BECOME ALTERNATELY NORTH AND SOUTH POLES. A
SLIP RING ASSEMBLY IS PRESSED ON TO THE REAR END OF THE ROTOR SHAFT AND
CONNECTED TO THE TWO ENDS OF THE FIELD WINDING.