Two 2-port networks with transmission matrices are connected in cascade. Which is the transmission matrix of the combination?

Two 2-port networks with transmission matrices are connected in cascad

1.	Two 2-port networks with transmission matrices are connected in cascade. Which is the transmission matrix of the combination?
A.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>10</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">2.2</td><td style="text-align: center;">12.4</td></tr></table>
B.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>6</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">0.2</td><td style="text-align: center;">12.4</td></tr></table>
C.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1</center></td><td><center>10</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">2.0</td><td style="text-align: center;">12.4</td></tr></table>
D.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>10</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">12.4</td><td style="text-align: center;">2.2</td></tr></table>
Answer» B. <table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>6</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">0.2</td><td style="text-align: center;">12.4</td></tr></table>

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Two 2-port networks with transmission matrices are connected in cascade. Which is the transmission matrix of the combination?

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