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 68
vated from the hardrubber top by special washers inorder to increase insulation. Bind-ing posts are so arranged as not tobe in the way when plugs are used. Pig. 562.—Standard high resistance box: 100,000 ohms. It is mounted in a brass box witha hard rubber top. Connections should be made to… … Ques. In testing cable insulation what is desirable withrespect to voltmeter and current? Ans. A low reading voltmeter should be used in connectionwith a large battery. 488 HAWKINS ELECTRICITY Wheatstone Bridge Method.—For accurate measurementsof resistance this method is almost universally used.…
Electrical engineering
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