1.

For a chopper, V

A. <table><tr><td rowspan="2"> . </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td><td rowspan="2">, <span style=" text-decoration: overline;"> .</span><br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td></tr><td align="center">R</td><td align="center">R</td></table>
B. <table><tr><td rowspan="2"> <span style=" text-decoration: overline;"> </span><br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td><td rowspan="2">, <span style=" text-decoration: overline;"> .</span><br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td></tr><td align="center">R</td><td align="center">R</td></table>
C. <table><tr><td rowspan="2"> <span style=" text-decoration: overline;"> </span><br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td><td rowspan="2">, .<br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td></tr><td align="center">R</td><td align="center">R</td></table>
D. <table><tr><td rowspan="2"> (1 - ).<br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td><td rowspan="2">, (1 - ).<br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td></tr><td align="center">R</td><td align="center">R</td></table>
Answer» D. <table><tr><td rowspan="2"> (1 - ).<br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td><td rowspan="2">, (1 - ).<br></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>V<sub>s</sub></center></td></tr><td align="center">R</td><td align="center">R</td></table>


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