Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 177
m wmmmm. Fig. 165 Fia. 166 Fig.167 Figs. 165 to 167.—Different shapes of armature-core slots construction. Consequently, the magnetic field is set up witha minimum power expenditure in the field coils. In thelarger-sized armatures a cast-iron spider, as it is called, iskeyed to the shaft and the… … Casr-lron-.Spder Fig. 168.—Core for lar<;e annatuir Imilt ii|)(iii a east-iron spider. Field Magnets.—The function of the field magnets in anelectIic generatoi- oi- motor is to furnish the magnetic field,Avhich in a generator is cut by the ai-mature conductors togenerate voltage, and in a motor…
Electric machinery
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