Symbolic Representation of D.C. Generator

Symbolic Representation of D.C. Generator

• The armature is denoted by a circle with two brushes. Mechanically it is connected to another device called prime mover. The two ends of armature are denoted as A₁ - A₂. The field winding is shown near armature and the two ends are denoted as F₁ - F₂. The representation of field vary little bit, depending on the type of generator.

• The symbolic representation is shown in the Fig. 3.15.1. Many times an arrow (↑) is indicated near armature. This arrow denotes the direction of current which induced e.m.f. will set up, when connected to an external load.

Key Point: Every practical generator needs a prime mover to rotate its armature. Hence to avoid complexity of the diagram, prime mover need not be included in the symbolic representation of generator.