Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

fixed losses
that component of the copper losses in DC shunt, short-shunt, and long-shunt machines' field circuit, that does not vary with change in the load current. With a fixed field power supply, it is an accepted industry agreement to not consider the losses in the field circuit rheostat in computing the efficiency and hence consider the field losses
as fixed losses.
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