11.52 In a balanced three-phase delta-delta system, the source has an abc-phase sequence. The phase angle for the source voltage is V = 40° and I = 4/15° Arms. If the total power absorbed by the load is 1400 W, find the load impedance.
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- A balanced delta-connected lood with impedance per phase of 30<30 ohms is connected to an abc-sequence balanced three-phase source with eAC = -120√2 cos (120πt + π/6) V through conductors with negligible impedances. Determine the line currents, load phase currents and the total complex power drawn by the lood. Write your values in polar form.A balanced three phase wye-delta system, the source has abc sequence and Van = 124 40 V rms. If the line impedance is 0,5 +j0.4 G and load impedance is 24 +18 G. Calculate the delta load currents and the real (P) and reactive (Q) powers at each phase of the load. ..Three identical impedances of 10∠ − 15° Ω to a line voltage of 208 V in star connectedconnected to a balanced source. We accept all line and phase voltages and currents as Vca as reference.Calculate in the form (Assume positive order).
- In a balanced three-phase wye–delta system, the source hasan abc-phase sequence and Van = 120angle 0° V rms. If the lineimpedance is zero and the line current IaA = 5 angle 20° A rms,find the load impedance per phase in the delta.A balanced delta-connected load with impedance 20 - j15 ohms is connected to a positive-sequence delta-connected generator with Vab = 330 V at zero degrees. Calculate load phase currents, line currents, and complex system power.A balanced three-phase Y-source with Vph=221 vrms drives a Y-connected three-phase load with phase impedance Za=84 Ohm, Zb=2+j11 ohm, and Zc=j84 ohm. Calculate the line currents and total complex power delivered to the load. Assume that the neutrals are connected.
- 3. A balanced delta connected load of "17+j18 - per phase is connected at the end of a three-phase line. The line impedance is 7+j9 - per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 Vrms. Taking phase "a" voltage Va as reference, determine the following: (a) Current in phase a. (b) Total complex power supplied from the source. (c) Magnitude of the line-to-line voltage at the load terminal.A set of balanced three-phase transmission lines with line-to-line voltages of 13 kV is connected to a balanced wye load with phase impedance of 8 + j3 Ohms. What is the real power delivered to the three-phase load?Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a series impedance of (0.4j2.7) per phase. One of the loads absorbs 560 kVA at 0.707 power factor lagging, and the other 132 kW at unity power factor. The line-to-line voltage at the load end of the line is 2203V. Compute (a) the line-to-line voltage at the source end of the line. (b) the total real and reactive power losses in the three-phase line, and (c) the total three-phase real and reactive power supplied at the sending end of the line. Check that the total three-phase complex power delivered by the source equals the total three-phase comp lex power absorbed by the line and loads.
- 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) per phase, and the other is -connected with an impedance of (60j45) per phase. The line is energized at the sending end from a 60-Hz, three-phase, balanced voltage source of 1203V (rms. line-to-line). Determine (a) the current, real power. and reactive power delivered by the sending-end source: (b) the line-to-line voltage at the load: (C) the current per phase in each load: and (d) the total three-phase real and reactive powers absorbed by each load and by the line. Check that the total three- phase complex power delivered by the source equals the total three-phase power absorbed by the line and loads.A three phase delta-connected load of 15+j18 per phase is supplied by an abc-sequence balance three phase wye connected source with a line voltage of 400v. The line impedance is 1+j2 per phase. Taking EA as a refeference, determine the line currents, phase load currents, phase voltages, and total complex power supplied by the source.3. A balanced delta connected load of "14+J18" ohm - per phase is connected at the end of a three-phase line. The line impedance is "7+J12" ohm - per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 Vrms. Taking phase "a" voltage Va as reference, determine the following: (a) Current in phase a. (b) Total complex power supplied from the source. (c) Magnitude of the line-to-line voltage at the load terminal.