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1 有200V,100kW之他激式直流發電機,電樞電阻為0.02Ω,若原動機轉速與激磁電流均為定值,則滿載時之電壓調整率為
A 5%
B 10%
C 15%
D 20%

IA=IL=100k/200=500A

E=V+IARA=200+500×0.02=210V

VR%=(VNL-VFL)/VFL×100%

=(210-200)/200×100%=5%