Positive SSL
1 直流分激式電動機之端電壓Vt、電樞電流IA、電樞電阻RA及激磁場之磁通量Φf,若鐵心無磁飽和,且其Kf為常數,則此電動機轉軸之轉速Nf與上述的關係,下列何者正確? 94 統測
A Nf = KfΦfVt-RAIA
B Nf = VtKfΦf+RAIA
C Nf = Vt-RAIAKfΦf
D Nf = KfΦfVt+RAIA

E=Vt-RAIA

=KΦn

n=Vt-RAIA