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GATE ECE 2007 | Question-68

The parallel branches of a $2$-wire transmission line are terminated in $100 \; \Omega$ and $200 \; \Omega$ resistors as shown in the figure. The characteristic impedance of the line is $Z_{0}=50 \; \Omega$ and each section has a length of $\lambda / 4$. The voltage reflection coefficient $\Gamma$ at the input is

  1. $-j \frac{7}{5}$
  2. $\frac{-5}{7}$
  3. $j \frac{5}{7}$
  4. $\frac{5}{7}$
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