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GATE ECE 2011 | Question-28

The block diagram of a system with one input $u$ and two outputs $y_1$ and $y_2$ is given below.

A state space model of the above system in terms of the state vector $\underline{x}$ and the output vector $\underline{y}=\left[\begin{array}{ll}y_1 & y_2\end{array}\right]^T$ is

  1. $\underline{\dot{x}}=[2] \underline{x}+[1] u ; \quad \underline{y}=\left[\begin{array}{ll}1 & 2\end{array}\right] \underline{x}$
  2. $\underline{\dot{x}}=[-2] \underline{x}+[1] u ; \quad \underline{y}=\left[\begin{array}{l}1 \\ 2\end{array}\right] \underline{x}$
  3. $\underline{\dot{x}}=\left[\begin{array}{cc}-2 & 0 \\ 0 & -2\end{array}\right] \underline{x}+\left[\begin{array}{l}1 \\ 1\end{array}\right] u ; \quad \underline{y}=\left[\begin{array}{ll}1 & 2\end{array}\right] \underline{x}$
  4. $\underline{\dot{x}}=\left[\begin{array}{ll}2 & 0 \\ 0 & 2\end{array}\right] \underline{x}+\left[\begin{array}{l}1 \\ 1\end{array}\right] u ; \quad \underline{y}=\left[\begin{array}{l}1 \\ 2\end{array}\right] \underline{x}$
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