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
e volt-meter and unknown resistance is 80,000 -^ 6 = 13,333i ohms, and subtracting the resistance of the voltmeter, the value of the un-known resistance is 13,333i - 8,000 = 5,333J ohms. TESTING AND TESTING APPARATUS 487 Ques. For what kinds of test is the voltmeter methodbest adapted ? Ans. For… … Fig. 563. — Standard resistance box:lOO.OOOohms.infour units of 10,000,20,000, 30,000, and 40,000 ohms.An infinity plug separates eachcoil from the ones adjacent. Seg-ments are elevated from the hardrubber top by special washers inorder to increase insulation. Bind-ing posts are so arranged as not…
Electrical engineering
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