Question 1 Two power transformers, T1 and T2 are connected in parallel with their primary HV side connected to the 110-kV bus and their LV side connected to the 11-kV bus. T1 nameplate data: 110Y/11A, 20 MVA, X = 0.1 p.u. at neutral tap; T2 nameplate data: 110Y/11A, 12 MVA, X = 0.08 p.u. at neutral tap; Load: 30 MVA, 11 kV, 0.8 lagging p.f. Part (a) Find the magnitude of the current in per unit through each transformer and the MVA output of each transformer. What problem do you detect? Can the problem be resolved by appropriate use of the tap- changing facilities? Justify your answer. The following tap settings are available on the high voltage side of both transformers: nominal, ± 1.8%, ± 3.6%. For your calculations, use a base of 30 MVA and 11 kV on the low voltage side. Assume that the load voltage is maintained at 11 kV.