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 226
ge for thebolts furnishes the necessary increase. Ques. What determines chiefly the cost of field mag*nets? Ans. The material used in making the cores and theirshape. 206 HAWKINS ELECTRICITY Ques. How does this affect the cost? Ans. Since considerable cross sectional area of core is re-quired, the…
Electrical engineering
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