DC Generators
In a dc generator, the eddy current power loss is

None of the listed here
Directly proportional to thickness of each lamination
Inversely proprtional to thickness of each lamination
Directly proportional to sqaure of thickness of each lamination

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

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

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