ABSTRACT
Motors play an important part in the modern domestic and industrial environment, and should therefore be of interest to the electrician. Motors may be divided into two distinct kinds: those using direct current (DC) and those using alternating current (AC). The effect of the force on a conductor in a magnetic field may be used to cause the rotation of a motor armature. It illustrates a simple single-loop motor, which comprises two copper segments insulated from each other. The commutator and loop are fixed to a central shaft which enables the whole assembly to be freely rotated. In practice, the DC motor comprises an armature of many loops revolving between electromagnetic poles. If by some means a DC motor is supplied with motive power it will act as a generator. Connection of the field windings is the same as for motors; that is, series, shunt or compound.
