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Engineering
Electrical Engineering
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Problem 1 (50 points): A three-phase line, which has an impedance of (2 j4) per phase, feeds two balanced three-phase loads that are connected in parallel. One of the loads is Y- connected with an impedance of (30 +j40) Ω per phase, and the other is Δ-connected with an impedance of (60-j45) Ω per phase. The line is energized at the sending end from a 60 Hz, three-phase, balanced voltage source of 120v3 V (rms, line-to-line). Determine: 1. The current, real power, and reactive power delivered by the sending-end source. 2. The line-to-line voltage at the load. 3. The current per phase in each load. The total three-phase real and reactive powers absorbed by each load and by the line. 4. Check that the total three-phase complex power delivered by the source equals the total three-phase power absorbed by the line and loads

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