A dc separately excited motor has a constant field current. The armatu – McqOptions

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1.	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
Answer» B. about 150 rpm

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