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				| 1. | A 200/400 V single phase transformer has leakage impedance z= r+jx. Then we can expect zero voltage regulation at power factor of | 
| A. | x/r leading | 
| B. | x/r lagging | 
| C. | r/x leading | 
| D. | r/x lagging | 
| Answer» B. x/r lagging | |