Problem 1. In the following network, it is known that the admittance of the branch between node 3 and node 4 is y34. Other branch admittances are not given. You admittance [YYYY 11 13 Y Y Y Y 21 Given the Ybus of the network as Y Y Y Y Y Y Y Y 1. Find the new Ybus for the following network, which is formed by adding a new branch with admittance y12 between 1 & 2. y 12 2. Find the Ybus for the following network y 14 This new network is formed by removing the branch between node 3 and node 4, and adding a new branch with admittance y14 between node 1 and node 4.