Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 66
atede. m. f. around the commutator of a dynamo have been suggested,*but only Mordeys method will be taken up here. It consists inconnecting one terminal of a voltmeter, preferably an electrostaticone, to one brush of the machine, and the other terminal to a smallpilot brush b, Fig. 50, which can be… … VOLTMCr£.R Fig. 50. Exploring Device for CommutatorPotentials at its rated r. p. m.; and, starting at the brush N, b is placed in suc-cessive positions around the commutator, the voltmeter reading in each position being noted, to-gether with the correspondingangular situation of b. The results,…
Electrical engineering
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