Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 319
^tN … From equation (152) we get for the effective value ==^v B 2v— - ^ 3 3i3^ r2= 07455, and, substituting the value of e found above, E = 0745.2O/2. 10-8 = 1-49.0//. 10-8. The effective alternating e.m.f. is therefore, in our example, 0745 ofthe P.D. between the d.c. brushes, or the d.c. pressure is…
Electrical engineering
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