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 80
e galvanometer circuit, and releasing it short circuitsthe galvanometer, bringing the latter quickly to rest. TESTING AND TESTING APPARATUS 499 Testing Sets.—For convenience in testing, a combinationof the instruments used is put up in a neat and substantial case,and known as a testing set. There… … Fig. 577.—Connections and circuits of Queen acme portable testing set. There are threerows of blocks, LL, MM, NN. LL is connected to NN by means of a heavy copperbar, joining L and N. LL and NN constitute the rheostat, from which any resistancefrom 1 ohm to 11,110 ohms may be obtained by removing…
Electrical engineering
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