GATE Papers >> EEE >> 2011 >> Question No 44

A three – bus network is shown in the figure below indicating the p.u. impedance of each element

The bus admittance matrix, Y -bus, of the network is

• (A)  j $\left[\begin{array}{ccc}0.3& -0.2& 0\\ -0.2& 0.12& 0.08\\ 0& 0.08& 0.02\end{array}\right]$   
• (B)  j $\left[\begin{array}{ccc}-15& 5& 0\\ 5& 7.5& -12.5\\ 0& -12.5& 2.5\end{array}\right]$   
• (C)  j $\left[\begin{array}{ccc}0.1& 0.2& 0\\ 0.2& 0.12& -0.08\\ 0& -0.08& 0.10\end{array}\right]$   
• (D)  j $\left[\begin{array}{ccc}-10& 5& 0\\ 5& 7.5& 12.5\\ 0& 12.5& -10\end{array}\right]$