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 378
some forms, the rib on the carbon is omitted and the feeding isaccomplished by a suitable mechanism. In the alternating currentlamps, a starting resistance or inductance coil is included in the cir-cuit to avoid a dead short circuit in starting. In some forms, magneticblow out coils with properly…
Electrical engineering
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