A separately excited dc generator has an open-circuit voltage Eo for a certain value of field current. If the field current is halved, the open-circuit voltage will be
A. E0/2.
B. less than E0/2
C. may be E0/2 or more than E0/2
D. 2 E0
Answer:C
A separately excited dc generator has an open-circuit voltage Eo for a certain value of field current. If the field current is halved, the open-circuit voltage will be
A. E0/2. B. less than E0/2 C. may be E0/2 or more than E0/2 D. 2 E0