Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 379
If the E.M.F. of coil I acts towards the neutral point, that of coil 3 will actaway from it, since they are 120° out of phase. We must therefore add the 364 Electrical Engineering two electromotive forces to find the voltmeter reading, which will therefore A be equal to 1-5 e. A twelfth of a period… … Fig- 374 voltmeter will read the sum of these electromotive forces, that is, 1-73 e.It can be shown very easily that this is the maximum momentary valueattained by the p.d. between two external leads. If, for example, thevectors OA and OB in Fig. 374 represent the electromotive forces induced
Electrical engineering
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