Practical Directions for Winding Magnets for DynamosE. & F.N. Spon, 1887 - 63 páginas |
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Termos e frases comuns
2.5 per cent adjustable resistance allowable density ampère-windings per square ampère-windings required armature assumed thickness brushes cloth compound machine constant potential Construction correct cross section crown 8vo curve d₁ density of magnetism determined diameter electromotive force Engineers evident exciting current external circuit factor of safety fall of potential Fcap field magnets figs finished machine force and current formula full load gives heat illustrations increase Inst iron larger less limit lines of force loss of potential magnet circuit magnet coils magnetisation maximum mean length method necessary number of ampère number of ampère-turns number of ampère-windings number of lamps number of turns number of windings obtained Ohm's law oval magnet over-saturated plates proper current proportions rheostat saturated series coils series machine shunt coils shunt current shunt machines shunt magnets smaller speed square centimetre square inch square mil temporary coils thickness of coil total number volts
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