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 102
dards with which to check theirvolt-, ampere-, and watt-meters. TESTING AND TESTING APPARATUS 521 When it is realized that an error of one per cent, in a com-mercial instrument means an error of one dollar one way orthe other in every one hundred dollars charged, the need ofsuch standardization… … Figs. 603 and 604.—Special loop test as made with the Leeds and Northrup fault finder.Diagram showing connections for the second measurement. The special loop test may beused to advantage where the length of the cable or faulty wire only is known, and wherethere are two other wires which may be…
Electrical engineering
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