MCQOPTIONS
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				| 1. | 
                                    In a 3 phase semiconverter, the output voltage becomes discontinuous for | 
                            
| A. | firing angle > 30° | 
| B. | firing angle > 60° | 
| C. | firing angle > 90° | 
| D. | firing angle > 120° | 
| Answer» C. firing angle > 90° | |