A single phase full -wave half controlled bridge converter feeds an inductive load: The two SCRs in the converter are connected to a common DC bus. The converter has to have a free wheeling diode (A) Because the converter inherently does not provide for free wheeling (B) Because the converter does not provide for free wheeling for high values of trigger -angles (C) Or else the free wheeling action of the converter will cause shorting of the AC supply (D) Or else if a gate pulse to one of the SCRs is missed, it will subsequently cause a high load current in the other SCR
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