Original Papers On Commercial Dynamo Design
Original Papers On Commercial Dynamo Design
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In our eReader you can find the full English version of the book. Read Original Papers On Commercial Dynamo Design Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Original Papers On Commercial Dynamo Design
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Thus assuming the generator is delivering the maximum current that the brushes could commutate by the varying resistance of their contacts if they were in a zero resultant magnetic field, any increase of load on the direct current generator will cause the brushes to spark, for two reasons: first, because of increased 899 B FIG. 19. 1, 500 K. W. 6, 600 Volt, 3 Phase, 25 Cycle and 300 Volt D. C. 250 R. P. M. Motor-Generator.
armature-reaction; second, because the current becomes too great to be t...aken care of by resistance commutation, even assum- ing no armature-reaction.
In a rotary converter, on the other hand, the armature- reaction effect is not present, and the brushes may bo assumed at all times to be either in a neutral field or in one that is help- ing the commutation. The result of this is that a direct current machine operated as a rotary converter will carry, as regards sparking, heavier overloads with fixed brushes than will the 56 ROTARIES AND MOTOR-GENERATORS same machine as a generator.
What to read after Original Papers On Commercial Dynamo Design?
You can find similar books in the "Read Also" column, or choose other free books by William Lawrence Waters to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Thus assuming the generator is delivering the maximum current that the brushes could commutate by the varying resistance of their contacts if they were in a zero resultant magnetic field, any increase of load on the direct current generator will cause the brushes to spark, for two reasons: first, because of increased 899 B FIG. 19. 1, 500 K. W. 6, 600 Volt, 3 Phase, 25 Cycle and 300 Volt D. C. 250 R. P. M. Motor-Generator.
armature-reaction; second, because the current becomes too great to be t...aken care of by resistance commutation, even assum- ing no armature-reaction.
In a rotary converter, on the other hand, the armature- reaction effect is not present, and the brushes may bo assumed at all times to be either in a neutral field or in one that is help- ing the commutation. The result of this is that a direct current machine operated as a rotary converter will carry, as regards sparking, heavier overloads with fixed brushes than will the 56 ROTARIES AND MOTOR-GENERATORS same machine as a generator.
What to read after Original Papers On Commercial Dynamo Design?
You can find similar books in the "Read Also" column, or choose other free books by William Lawrence Waters to read onlineMoreLess
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