Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 79
able accuracy in the results. There are reallytwo ballistic methods, the Ring method and the Dirided-bar method. In either of these methods the ballistic galvanometer is used for measur-ing the currents induced in a test coil, by reversing the exciting current, orcutting the lines of force. Ring-… … CELLS ^=- l_ < Fig. 2. Connections for the Ring Method. exciting coil or circuit, and a small exploring coil is wound over the excit-ing coil at one point, as shown. The terminals of the latter are connectedto the ballistic galvanometer. MAGNETIC TEST METHODS. 67 The method of making a test is…
Electrical engineering
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