A wire is a single, usually cylindrical, elongated string
of drawn metal. Wires are used to bear mechanical
loads and to carry electricity and telecommunications signals. Standard sizes
are determined by various wire
gauges. The term wire is also used more loosely to refer to a bundle of such
strands as in 'multi-stranded wire,
which is more correctly termed a cable in electricity.
How can the problem be remedied : No residual magnetism, reversed field connection and high resistance of field circuit are responsible for the failure of build up process of a dc generator. The factors are explained below: No residual magnetism: For the starting build up process requires some residual magnetism in the magnetic circuit then no voltage will be generated that can produce current flow through field circuit. Reversed field connection: The voltage induced inside the coil of field circuit due to residual magnetism that can permit the flow of current. For the following direction of this flux will be created and the direction of this flux will be same direction as the residual flux. If the field connections are reversed the lines of flux produced by current flow will oppose the residual flux, as a result generate voltage will decrease rather than increase. So voltage build up process failed. Field circuit resistance too high: A field
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