Yвия (0) A four bus power system whose branch resistance is neglected, is represented by the following bus admittance ma

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Yвия (0) A four bus power system whose branch resistance is neglected, is represented by the following bus admittance matrix You r-j17.5 j05.0 j02.5 (10.0 j05.0 - 15.0 10.0 j00.0 102.5 j10.0 - 17.5 105.0 (10.0 100.0 j05.0 -15.0. The magnitude of voltage at bus 1 (slack bus) is adjusted to 1.05 pu. The scheduled load ar bus 2 is S = -0.5-; 0.2 pu. The scheduled load at bus 3 is S; = -0.4 - ; 0.1 pu. The scheduled load ar bus 4 is S. - -0.2 pu. N.B.: The initial estimates of V2, V; and V, are V." - V," = V," = 1.0 pu. Question 1: Perform three iterations -at an accuracy of four decimal places- of a Gauss-Seidel Load Flow Method to determine the voltages at all the busses. Question 2: 1. Repeat question / using Gauss Load Flow Method to determine the voltages at all the busses. 2- Comment on the results. Question 3: Il after several iterations and with a precision of 10 the bus voltages converge to: V, - 1.0130 - 0.0869 pu V; - 1.0183-j0.0831 pu and V, - 1.0389 -1 0.0405 pu Determine the Power flows and the losses in the line between the busses 2 and 3. Question 4: Write a computer program to answer the three above questions.