Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 221
termined entirely by the load, since the magnetic flux is constant.If the load on the motor remains constant, the armature current will re-main constant, however much the series resistance may be varied. Onsuddenly decreasing the resistance there is, it is true, a momentary increaseof the armature… … Fig. 190 65. Motor with Constant Excitation 207 speed, however, causes an increase in the back e.m.f., which reduces thearmature current to its former value corresponding to the load. The onlyway to vary the armature current of a constantly excited motor is to varythe load. The speed, on the other…
Electrical engineering
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