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GATE ECE 2010 | Question-22

If the scattering matrix $[S]$ of a two port network is
\[ [S]=\left[\begin{array}{cc}
0.2 \angle 0^{\circ} & 0.9 \angle 90^{\circ} \\
0.9 \angle 90^{\circ} & 0.1 \angle 90^{\circ}
\end{array}\right] \]
then the network is

  1. lossless and reciprocal
  2. lossless but not reciprocal
  3. not lossless but reciprocal
  4. neither lossless nor reciprocal
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