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- · New York, T. Audel · leaf 269
by Fer-raris, and are sometimes called after him. They are for alter-nating current only, and there are two forms: 1. Shielded pole type; 2. Rotary field type. 1.788 HAWKIXS ELECTRICITY Ques. Describe the shielded pole type of inductioninstrument. Ans. As shown in figs. 2,505, and 2.506 it… … PERMANENT\ MAGNET SHIELDS. V ~—-KDISC
Electrical engineering
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