DC Generators
In dc generator, the constant losses is equal to

None of the listed here
Stray losses plus shunt cu loss
Mechanical losses
Stray losses

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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 series flux
To increase the generated e.m.f.

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