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A 30-kVA 8000/230-V distribution transformer has an impedance referred to the primary of 20 j100 S. The components of the excitation branch referred to the

A 30-kVA 8000/230-V distribution transformer has an impedance referred to the primary of 20 j100 S. The components of the excitation branch referred to the primary side are RC- 100 k and XM-20 k? (a) If the primary voltage is 7967 V and the load impedance is ZL-2.0 + j0.7 ?, what is the secondary voltage of the transformer? What is the voltage regulation of the transformer? (b) If the load is disconnected and a capacitor of-j3.0 S2 is connected in its place, what is the secondary voltage of the transformer? What is its voltage regulation under these conditions?

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