Positive SSL
1 有一分激式直流發電機,感應電動勢為100V,電樞電阻為0.1Ω,電樞電流為40A,磁場電阻為48Ω,若忽略電刷壓降,則輸出功率為何?
A 3648W
B 3800W
C 3964W
D 4000W

Vt=E-IARA

Vt = 100-40×0.1=96V

IF=Vt/RF=96/48=2A

IL=IA-IF=40-2=38A

Pout=VtIL=96×38=3648W