Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 232
) and (P2), as shown inFig. 188. 233. Ventilation.—On account ofthe heat generated in the armaturecores, due to hysteresis and eddycurrents in the iron, and the (I2R)losses in the armature conductors,some means of ventilation must beprovided in order to prevent an ex-cessive temperature rise.… … Fig. 186 222 PKACTICAL APPLIED ELECTEICITY called ventilating ducts, can be made by placing a piece ofmetal on edge, as shown in Figs. 187 and 188, and fasteningthem to the disk. These ventilating ducts are usually spacedfrom 2 to 4 inches apart.
Electrical engineering
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