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 270
ounter-volt age issufficient to prevent the current from becoming excessive. The resistance of the coils in the starting box must be suffi-cient to prevent much more than the normal current of full loadfrom flowing through the armature when it is stationary. Inthe case of the 10-horse-power motor… … Shunt Field Fig. 168. — Diagram of starting boxconnected with shunt-wound motor. 240 ELECTRICITY AND MAGNETISM 165. Automatic release. Most starting boxes nowadays arefitted with an automatic arrangement called a no-voltage release that allows the contact lever to return to its off position in case…
Electricity · Magnetism
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