2-13
In COMPOUND MOTORS, one set of field windings is connected in series with the armature, and
one set is connected in parallel. The speed and torque characteristics are a combination of the desirable
characteristics of both series and shunt motors.
LOAD on a motor is the physical object to be moved by the motor.
DC MOTOR ARMATURES are of two types. They are the Gramme-ring and the drum-wound
types.
THE GRAMME-RING ARMATURE is inefficient since part of each armature coil is prevented
from cutting flux lines. Gramme-ring wound armatures are seldom used for this reason.
