| http://www.w3.org/ns/prov#value | - In such a circuit as shown in FIG. 7(a), FIG. 7(b), FIG. 9(a), FIG. 9(b), or FIG. 11 in which the coils 17a and 17b are replaced by the coils 17c and 17d, an armature current out of phase by 90 degrees relative to the curve 41 shown in FIG. 8 is caused to flow in the armature coil 6 (composed of the armature coils 14b, 14d, 14f, and 14h in this case).
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