MCQOPTIONS
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				| 1. | 
                                    In a 3 phase fully controlled converter the firing frequency is | 
                            
| A. | 3 times the line frequency | 
| B. | 6 times the line frequency | 
| C. | 9 times the line frequency | 
| D. | 12 times the line frequency | 
| Answer» C. 9 times the line frequency | |