DC Generators
The armature of dc machine is laminated in order to reduce

Frictional loss
Eddy current loss
Copper loss
Hysteresis loss

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DC Generators
When two D.C. generators are running in parallel an equalizer bar is used

To increase the series flux
So that the two identical machines will pass approximately equal currents to the load
To increase the generated e.m.f.
To reduce the combined effect of armature reaction of both the machines

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