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 72
figs. 564 and 565, andthe three figures should be carefully compared. If, then, the value of A, B, and C be known, D can be calculated.The proportion (1) is reduced to the following equation beforesubstituting. TESTING AND TESTING APPARATUS 491 For instance, if A and C be, as in fig. 565, 10 ohms… … Pig. 567.—Standard resistance box and Wheatstone bridge. This pattern is a modificationof the Anthony form of bridge. All the resistances are wound upon metal spools. Thebridge ratio coUs are 1, 10. 100, 1,000. 10,000. The rheostat coils are arranged in fiverows, of ten coils each. The ordinary…
Electrical engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
