TransactionsPublished under the care of the General Secretary and the Treasurer . Fig. 9.— Arnold diagram. is calculated, and the voltage drop due thereto is estimated by com-parison with the effect of the demagnetizing , the difference in. 4> InPol^ 0-Field Lea^0 In Air Gap -Ann. Lc&k Fig. 10.—Niethammer diagrait. distribution, of magnetic path, etc., being taken into account. Thisvalue is represented in BC ^E. The total effect of the is the represented by the vector AC, at right angles 742 RUSH MORE: REGULATION OF ALTERNATORS. to the current vector OG. To this


TransactionsPublished under the care of the General Secretary and the Treasurer . Fig. 9.— Arnold diagram. is calculated, and the voltage drop due thereto is estimated by com-parison with the effect of the demagnetizing , the difference in. 4> InPol^ 0-Field Lea^0 In Air Gap -Ann. Lc&k Fig. 10.—Niethammer diagrait. distribution, of magnetic path, etc., being taken into account. Thisvalue is represented in BC ^E. The total effect of the is the represented by the vector AC, at right angles 742 RUSH MORE: REGULATION OF ALTERNATORS. to the current vector OG. To this is added the reactance drop CDand the ohmic drop DF, leaving OF as the terminal voltage. Niethammers Method^ ^^. The diagram of Fig. 10, with the omission of true armatureinductance, most clearly represents to the eye, by the combinedspace and time vectors, the relations of the various elements whichconstitute armature interference. The figure is nearly self-explana-tory. The ir drop alone is considered in the armature, the which is combined with that necessary, in the gap and arma-ture iron, for the useful and armature leakage flux the combination of these fluxes is added the field leakage, andthe ampere-turn


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Keywords: ., bookcentury1900, bookdecade1900, bookidtr, booksubjectelectricity