Power_Assignment_M_1

Power_Assignment_M_1 - 15 ft 15 ft 25 ft 3. A 50-Hz three...

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Answer all four questions. The submission date is 6 th July,2010, Tuesday at the beginning of class. 1. A three phase line is designed with equilateral spacing of 10 ft as shown in the following figure. Each phase is composed of seven equal strands and the radius of each strand is 2.02827*10 -08 ft. Find the total inductance of the three phase line in henrys per kilometer and the inductive reactance of the line in ohms per mile. a c b 2. A single-circuit three phase line operated at 50 Hz is arranged as shown below. Each phase is composed of four identical strands and the radius of each strand is 2.02827*10 -08 ft. Find the line-to-neutral capacitance and the capacitive reactance of the line in ohm-mile.
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Unformatted text preview: 15 ft 15 ft 25 ft 3. A 50-Hz three phase transmission line is 200 km long. It has a total series impedance of 50 +j150 ohm and a shunt admittance of j110 mho. It delivers 100 MW of power at 220 KV, at 95% power factor lagging. Find the sending end power factor and voltage regulation. 4. What is composite conductor? One circuit of a single phase line is composed of 2 solid 0.30-cm-radius wires (in the X side). The return path is composed of two 0.25-cm-radius wires (in the Y side). The arrangement is shown below. Find the inductance due to the current in each side of the line and the inductance of the complete line in henrys per kilometer. Side X Side Y b c d 10 ft 6 ft 6 ft a...
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Power_Assignment_M_1 - 15 ft 15 ft 25 ft 3. A 50-Hz three...

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