Dynamo Electric Machinery a Manual for Students of Electrotechnics
The book Dynamo Electric Machinery a Manual for Students of Electrotechnics was written by author Silvanus Phillips Thompson Here you can read free online of Dynamo Electric Machinery a Manual for Students of Electrotechnics book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Dynamo Electric Machinery a Manual for Students of Electrotechnics a good or bad book?
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178, of having the second pair of brushes F F' following the pair P P'. In this position of the armature A and/C make about equal angles with the line of maximum action m f%', hence the two electromotive-forces in these coils are for the moment about equal, but that in A is increasing, that in C decreasing. As these coils are now in series, their separate electromotive-forces are of course added together. A moment later we shall have arrived at the state of things represented in Fig. 1 66, whic...h is a twelfth of a turn advanced. A is now FIG. 166. FIG. 167. in the position of maximum induction ; C is rapidly approach- ing the neutral position but is not yet cut out ; B has again begun to have electromotive-force induced in it, and has just come into circuit. B and C are in parallel with one another and in series with A. The next twelfth of a turn brings us to the stage shown in Fig. 167. C is now at the neutral position Dynamo-electric Machinery. 195 FIG. 168. and is out of circuit, A has passed the maximum on one side and B is approaching the maximum on the other ; and they are in series.
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