A single phase full converter has discontinues load current. The converter is supplying a dc shunt motor (R-L-E) load. When the current falls to zero the output voltage is
(a) Zero
(b) Vo
(c) Vm
(d) E
I have been asked this question in final exam.
This intriguing question comes from Single Phase FW AC-DC-5 topic in chapter Converters of Power Electronics