MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the ratio of copper required for 4-wire 2-phase ac system to an equivalent 2-wire DC system? |
| A. | \(\frac{1}{{2{{\cos }^2}\theta }}\) |
| B. | cos2 θ |
| C. | 2cos2 θ |
| D. | \(\frac{2}{{{{\cos }^2}\theta }}\) |
| Answer» B. cos2 θ | |