. A text-book of electrical engineering;. rs. This flux 430 Electrical Engineering is shown in Figs. 425, 426 and 427, for the three moments previously con-sidered. In all that follows, the flux, electromotive force, and rotor currents,etc., for each fictitious rotating magnetomotive force will naturally bedistributed around the periphery according to the sine law. With respect to the backwardly rotating ampere-turns, the rotor has a sUpof 200 per cent. In consequence of this, a large short-circuit current flows inthe rotor, directly opposing the backwardly rotating ampere-turns, and pre-venti
. A text-book of electrical engineering;. rs. This flux 430 Electrical Engineering is shown in Figs. 425, 426 and 427, for the three moments previously con-sidered. In all that follows, the flux, electromotive force, and rotor currents,etc., for each fictitious rotating magnetomotive force will naturally bedistributed around the periphery according to the sine law. With respect to the backwardly rotating ampere-turns, the rotor has a sUpof 200 per cent. In consequence of this, a large short-circuit current flows inthe rotor, directly opposing the backwardly rotating ampere-turns, and pre-venting the flux from entering the rotor. The flux is driven, however, alongthe secondary leakage path (Figs. 428,429 and 430). The outer black circlesin these figures represent the backwardly rotating ampere-turns, and theinner ones the rotor ampere-turns. On the assumption that the rotor has noresistance, an infinitely small number of lines is sufficient to induce the rotorcurrents necessary to counterbalance the primary backwardly rotating.
Size: 1581px × 1581px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidcu3192400440, bookyear1920
