TransactionsPublished under the care of the General Secretary and the Treasurer . ations; moreover, ithas been treated with more detail by M. Jean Rey in a very interestingcommunication presented to the Congress of 1900, in which the reader willfind an interesting example of a calculation of reactive coefficients in amachine actually built by this method, which has since been followed byvarious authors. 9. Theory of Synchronous Motors, Vol. I. Paris, Gauthiers-Villars,1900, 638 BLOSDEL: ARMATURE REACTIONS. Diagram of and Currents of an Alternator with Unsatu-rated Armature and with Sat


TransactionsPublished under the care of the General Secretary and the Treasurer . ations; moreover, ithas been treated with more detail by M. Jean Rey in a very interestingcommunication presented to the Congress of 1900, in which the reader willfind an interesting example of a calculation of reactive coefficients in amachine actually built by this method, which has since been followed byvarious authors. 9. Theory of Synchronous Motors, Vol. I. Paris, Gauthiers-Villars,1900, 638 BLOSDEL: ARMATURE REACTIONS. Diagram of and Currents of an Alternator with Unsatu-rated Armature and with Saturated Field diagram in Fig. 1 reproduces Fig. 5 of my first paper, sup-plemented by the definitions of Fig. 2. / represents the apparentresistance, that is to say, the ohmic resistance augmented by theeffects due to Foueault currents; <^is the difference of phase inthe external circuit, and ^is the difference of phase with respectto the internal It is proposed to calculate the excitationnecessary to develop an V at the terminals under a current- ^O-s


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