Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 460
esand shunt coils. The field-magnets, of course, lose their strength when thecurrent ceases to flow, but the cores contain sufficient residual magnetism to cause the ma-chine to develop sufficientcurrent to pick up on thestart. 531. The Electric Motor. The purpose of the electricmotor is to… … FiQ. 546.—Essential parts and electrical connec-tions in the direct-current electric motor. bipolar machine with Gramme-ring armature (Fig. 546) con-nected with an external power circuit. 450 INDUCED CURRENTS Tlie C4irfent supplied to tlie motor divides at c?, part flowsthrougli the fleld-iuagiiet…
Physics
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