DC Generators
The field structure of a dc machine uses ______

Both salient and non salient pole arrangements
None of the listed here
Salient pole arrangements
None salient pole arrangements

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

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

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