A 220 V, 1000 rpm, 60 A separately-excited dc motor has an armature re – McqOptions

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1.	A 220 V, 1000 rpm, 60 A separately-excited dc motor has an armature resistance of .5 . It is fed from single-phase full converter with an ac source voltage of 230 V, 50Hz. Assuming continuous conduction, the firing angle for rated motor torque at (-400) rpm is _________
A.	122.4
B.	117.6
C.	130.1
D.	102.8
Answer» E.

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