MCQOPTIONS
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| 1. |
The RL circuit of the figure is fed from a constant magnitude, variable frequency sinusoidal voltage source Vin. At 100 Hz, the R and L elements each have a voltage drop μRMS. If the frequency of the source is changed to 50 Hz, then new voltage drop across R is |
| A. | \(\sqrt {\frac{5}{8}} {{\rm{\mu }}_{RMS}}\;\) |
| B. | \(\sqrt {\frac{2}{3}} {{\rm{\mu }}_{RMS}}\) |
| C. | \(\sqrt {\frac{8}{5}} {{\rm{\mu }}_{RMS}}\) |
| D. | \(\sqrt {\frac{3}{2}} {{\rm{\mu }}_{RMS}}\) |
| Answer» D. \(\sqrt {\frac{3}{2}} {{\rm{\mu }}_{RMS}}\) | |