A dc separately excited motor has a constant field current.
The armature is fed from a single phase supply through a semi-converter.
When α = 0, speed is 600 rpm.
If α = 90°, the speed is likely to be
A. about 300 rpm
B. about 150 rpm
C. about 75 rpm
D. about zero
Show Answer
Answer: A
Share your understanding of this question with the correct explanation.