An 18-km, 60-Hz, single-circuit, three-phase line is composed of Partridge conduc-tors equilaterally spaced with 1.6 m between centers. The line delivers 2500 kW at 11 kV to a balanced load. Assume a wire temperature of 5C. n the power factor is (i) 80% lagging, (ii) unity, (iii) 90% leading? (c) Determine the percent regulation of the line at the above power factors. d) Draw phasor diagrams depicting the operation of the line in each case.
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