Problem 1: A three-phase transmission line has an impedance of 4 + j1? per phase supplies a load of 1 MVA at 4200-V line voltage and 0.75 power factor lagging. Determine: a. The complex power b. The power loss in the line c. The voltage at the sending end. Assume Y-Y three-phase system.
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The line impedance is 4 + j1 = 7 + j1 = 14.7. Hence, the line has an impedance of 14.7 + j1 = 27.3. Show more…
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