Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 500
connection with such metalsas nickel and brass, which require high resistance solutions,a considerable drop in voltage is required for the former, inorder to prevent the blackening of the work. 3,154 HAWKINS ELECTRICITY A rheostat inserted in the field of the dynamo will maintain an initialvoltage… … Fig. 4,553.—Form of rheostat for controlling heavy currents. It has a capacity of 800 amperes.The variation of voltage obtainable is 2.1 volts. It is suitable for solutions containing175 to 200 square feet of nickel, 125 feet of copper or brass work, or 75 feet of zinc work.The capacity of…
Electrical engineering
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