MCQOPTIONS
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| 1. |
The self-inductance of a choke coil is 10 mH. When it is connected with a 10 V dc source, then the loss of power is 20 watt. When it is connected with 10 volt ac source loss of power is 10 watt. The frequency of ac source will be |
| A. | 50 Hz |
| B. | 60 Hz |
| C. | 80 Hz |
| D. | 100 Hz |
| Answer» D. 100 Hz | |