MCQOPTIONS
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				| 1. | 
                                    When a single phase dual converter is operating in circulating current mode | 
                            
| A. | both converters are working as rectifiers simultaneously | 
| B. | one converter is always working as rectifier and the other as inverter | 
| C. | only one converter is working at one time | 
| D. | both converters are either working as rectifiers or as inverters simultaneously | 
| Answer» C. only one converter is working at one time | |