The practical testing of dynamos and motors (1905)
Smith, Charles Frederick, 1873- · Manchester Scientific Pub. Co · leaf 212
ad all the instruments simultaneously,and they were accordingly read in groups as follows: Assoon as the load current A^ and the motor voltage Fj hadbeen adjusted, a signal was given, and Fj, A^, V.,, A.,, andn were observed together. After noting these readings,simultaneous readings of F3 and A^… … 100 0 10 20 30 40 50Amperes.Fig. 61.—Curves of Tramway Motor from Results of Fields Test. therefore immaterial whether they exactly correspondedwith A^ or not. This method of taking readings is typicalof the arrangements that have frequently to be madewhere it is impossible to depend on absolute…
Dynamos · Electric motors
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