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 119
to read directly in thousandths of an ampere or thousandthsof a volt respectively. Ques. Describe the moving iron type instrument. Ans. The arrangement of the working parts are shown injg. 620. A soft iron needle N, is pivoted inside of a coil C, andis held out of line with the axis of the coil by… … Fig. 620. MoWng iron type instrument. The essential parts are: N, soft iron needle; C,coil; M, permanent magnet; P. pointer; S. scale. Current passing through the coil actson the needle, causing it to turn against the restraining force due to the influence of thepermanent magnet. magnetic lines of…
Electrical engineering
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