MCQOPTIONS
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				| 1. | 
                                    A step down cycloconverter has an input frequency f. If it uses natural commutation, the output frequency | 
                            
| A. | must be an even sub-multiple of input frequency | 
| B. | must be an odd sub-multiple of input frequency | 
| C. | 2Ir | 
| D. | 2 Ir | 
| Answer» B. must be an odd sub-multiple of input frequency | |