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In a self-excited generator the generator supplies its own ex... . current ........ Shunt field has a low resistance? If there are 8 poles
In a self-excited generator the generator supplies its own ex... . current ........ Shunt field has a low resistance? If there are 8 poles in a dc generator, the number of magnetic reversals in the armature core will be -....... If the frequency of magnetic reversals is large Hysteresis loss will be small? Commercial efficiency is = Efficiency of DC generator is maximum when .loss : %3D ..... ......
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Electric Machinery
Authors: Charles Kingsley, Jr, Stephen D. Umans
6th Edition
71230106, 9780073660097, 73660094, 978-0071230100
