An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 269
tJc3 … Interior Exterior Fig. 167. — Exterior and interior of motor starting box. to produce sufficient back e.m.f. to prevent an excessive rushof current through the windings. A rheostat made up for thispurpose is called a starting box or starting rheostat. A usualform is illustrated in figure 167. It…
Electricity · Magnetism
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-167-75.webp)
