Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 210
g Ap-paratus FOR Accumulators. Sperm Candle. See Candle Power. Spherical Armature. See Armature. Spherical Reduction Factor of Lamps, the fraction by which the mean horizontalop of a lamp must be multiplied in order to obtain the value of the mean spherical cpfor that lamp. The spherical… … Spider A, Faced plate to which commutator bracket is bolted.B, Dovetail slots for receiving stampings, c, Flange forcoupling to engine flywheel. port for the armature core of a cc machine,or for the comniutator of a cc machine, or forthe laminations of which an alternator fieldsystem is sometimes…
Electrical engineering
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