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A three-phase unbalanced source with the following phase to neutral voltages: 300-120 20090 10ol-30 1001-30 is applied to the circuit of balanced star. The star common point is connected to the i...
8.25 A three-phase balanced Y-connected load with series impedances of
8.25 A three-phase balanced \(Y\) -connected load with series impedances of \((8+j 24) \Omega\) per phase and mutual impedance between any two phases of \(j 4 \Omega\) is supplied by a three-phase unbalanced source with line-to-neutral voltages of \(V_{a n}=200 \angle 25^{\circ}, V_{b n}=100 \angle-155^{\circ}\), \(V_{c n}=80 \angle 100^{\circ} \mathrm{V}\). The load and source neutrals are both solidly grounded. Determine: (a) the load sequence impedance matrix, (b) the symmetrical components of the line-toneutral voltages, (c) the symmetrical components of the...
I. A balanced three-phase positive sequence wye-connected 60Hz source voltage has line-neutral voltage of V, 1000 V. It is connected to a three- phase wye connected load whose impedance is z 50+j...
I. A balanced three-phase positive sequence wye-connected 60Hz source voltage has line-neutral voltage of V, 1000 V. It is connected to a three- phase wye connected load whose impedance is z 50+j37.7 2 a. Find line currents ia ib, ic and line-line voltages Vab, Vbo Vac b. Find the total complex power delivered to the load. c. Find delta-connected capacitor bank needed to bring the PF to 0.95 (lagging) of system. d. Re-calculate currents la, ib, io with Case c....
I. A balanced three-phase positive sequence wye-connected 60Hz source voltage has line-neutral voltage of V, 1000 V. It is connected to a three- phase wye connected load whose impedance is z 50+j...
I. A balanced three-phase positive sequence wye-connected 60Hz source voltage has line-neutral voltage of V, 1000 V. It is connected to a three- phase wye connected load whose impedance is z 50+j37.7 2 a. Find line currents ia ib, ic and line-line voltages Vab, Vbo Vac b. Find the total complex power delivered to the load. c. Find delta-connected capacitor bank needed to bring the PF to 0.95 (lagging) of system. d. Re-calculate currents la, ib, io with Case c....
A balanced positive-sequence wye-connected 60-Hz three-phase source has line-to-line voltages of VL = 440 V rms....
A balanced positive-sequence wye-connected 60-Hz three-phase source has line-to-line voltages of VL = 440 V rms. This source is connected to a balanced wye-connected load. Each phase of the load consists of a 0.5-H inductance in series with a 50-Ω resistance. Assume that the phase of Van is zero. home / study / engineering / electrical engineering / electrical engineering questions and answers / A Balanced Positive-sequence Wye-connected 60-Hz Three-phase Source Has Line-to-line Voltages ... Question: A balanced positive-sequence wye-connected...
5. The line to neutral voltages of a Y-connected three phase source are given by, The...
5. The line to neutral voltages of a Y-connected three phase source are given by, The above three phase source is directly connected to a delta connected balanced three phase resistive load. The resistance in each phase is 10 ohms. Calculate the current phasor 0. Answer- 4. Following three loads are connected in parallel across a single-phase source voltage source: Load 1 absorbs 15 kW and 6.667 kvar; Load 2 absorbs 3 kVA at 0.96PF leading; Load 3 absorbs 15...
A 3-phase 4 wire symmetrical (balanced) Y-connected source with line voltage 340V (take the phase of...
A 3-phase 4 wire symmetrical (balanced) Y-connected source with
line voltage 340V (take the phase of VanVan to be 0 degrees) feeds
an unbalanced three phase load formed by the impedances
ZY1=14+j(14)Ω, ZY2=7+j(11)Ω and ZY3=20+j(−14)Ω connected in a Y
(a.k.a. “star”, or a “tee”) configuration. Find the line currents,
neutral current (current in the fourth “return” wire), and active
power in each phase.
(20 points) A 3-phase 4 wire symmetrical (balanced) Yconnected source with line voltage 340V (take the phase...
In a three-phase balanced wye-wye system, the source is an abc-positive sequence set of voltages with...
In a three-phase balanced wye-wye system, the source is an abc-positive sequence set of voltages with Van = 120 000 Vrms. The per phase impedance of the load is 5 +J60. If the line impedance per phase is 0 0, find the line currents, the line to line voltages at the source, and the line to line voltages at the load. 1. Van 120 0" Vrms ZY = 5+j Va VA neutral
Sketch the 3-phase systems, and show your calculations: Problem (a): A positive-sequence balanced thrcc-phase wyc-connected source...
Sketch the 3-phase systems, and show your calculations: Problem (a): A positive-sequence balanced thrcc-phase wyc-connected source supplics powcr to a balanced wyc-connected load. The line voltage is 100 V. The line impedance is 2 ? per phase, and the load impedance is 50 +j30 ? per phase. Determine the load voltages if V an-00. Problem (b): A positive-sequence balanced three-phase wye-connected source supplies power to a balanced wye-connected load. The magnitude of the line voltages is 208 V rms. If...
A balanced, positive-sequence, Y-connected voltage source with Ean-277Vr is applied to a balanced-A load with Za-30+jd0)Ω...
A balanced, positive-sequence, Y-connected voltage source with Ean-277Vr is applied to a balanced-A load with Za-30+jd0)Ω The line impedance between source and load is ZL-(4+j3Q for each phase. Determine: a. Convert the Δ-load to its equivalent Y-load, and sketch the circuits b. Line currents C. The Δ-load currents d. Voltages at the load terminals
V. The figure showed a balanced Y - A three phase circuits. The phase voltages of...
V. The figure showed a balanced Y - A three phase circuits. The phase voltages of the Y - connected source are Va = 1107_0° Vrms, Vo = 1101_-120° Vms, and V. = 1107_120° Vrms. The line impedance are each ZL = 10 + j5 12. The impedance of the A-connected load are each ZA = 75 + j225 1. Determine the phase currents in the A-connected load. ZL] b TAB & A B Zi IGB Zo Voy IV Tech...
I. A balanced three-phase positive sequence wye-connected 60Hz source voltage has line-neutral voltage of V, 1000 V. It is connected to a three- phase wye connected load whose impedance is z 50+j37.7 2 a. Find line currents ia ib, ic and line-line voltages Vab, Vbo Vac b. Find the total complex power delivered to the load. c. Find delta-connected capacitor bank needed to bring the PF to 0.95 (lagging) of system. d. Re-calculate currents la, ib, io with Case c....
I. A balanced three-phase positive sequence wye-connected 60Hz source voltage has line-neutral voltage of V, 1000 V. It is connected to a three- phase wye connected load whose impedance is z 50+j37.7 2 a. Find line currents ia ib, ic and line-line voltages Vab, Vbo Vac b. Find the total complex power delivered to the load. c. Find delta-connected capacitor bank needed to bring the PF to 0.95 (lagging) of system. d. Re-calculate currents la, ib, io with Case c....
5. The line to neutral voltages of a Y-connected three phase source are given by, The above three phase source is directly connected to a delta connected balanced three phase resistive load. The resistance in each phase is 10 ohms. Calculate the current phasor 0. Answer- 4. Following three loads are connected in parallel across a single-phase source voltage source: Load 1 absorbs 15 kW and 6.667 kvar; Load 2 absorbs 3 kVA at 0.96PF leading; Load 3 absorbs 15...
A 3-phase 4 wire symmetrical (balanced) Y-connected source with
line voltage 340V (take the phase of VanVan to be 0 degrees) feeds
an unbalanced three phase load formed by the impedances
ZY1=14+j(14)Ω, ZY2=7+j(11)Ω and ZY3=20+j(−14)Ω connected in a Y
(a.k.a. “star”, or a “tee”) configuration. Find the line currents,
neutral current (current in the fourth “return” wire), and active
power in each phase.
(20 points) A 3-phase 4 wire symmetrical (balanced) Yconnected source with line voltage 340V (take the phase...
In a three-phase balanced wye-wye system, the source is an abc-positive sequence set of voltages with Van = 120 000 Vrms. The per phase impedance of the load is 5 +J60. If the line impedance per phase is 0 0, find the line currents, the line to line voltages at the source, and the line to line voltages at the load. 1. Van 120 0" Vrms ZY = 5+j Va VA neutral
Sketch the 3-phase systems, and show your calculations: Problem (a): A positive-sequence balanced thrcc-phase wyc-connected source supplics powcr to a balanced wyc-connected load. The line voltage is 100 V. The line impedance is 2 ? per phase, and the load impedance is 50 +j30 ? per phase. Determine the load voltages if V an-00. Problem (b): A positive-sequence balanced three-phase wye-connected source supplies power to a balanced wye-connected load. The magnitude of the line voltages is 208 V rms. If...
A balanced, positive-sequence, Y-connected voltage source with Ean-277Vr is applied to a balanced-A load with Za-30+jd0)Ω The line impedance between source and load is ZL-(4+j3Q for each phase. Determine: a. Convert the Δ-load to its equivalent Y-load, and sketch the circuits b. Line currents C. The Δ-load currents d. Voltages at the load terminals
V. The figure showed a balanced Y - A three phase circuits. The phase voltages of the Y - connected source are Va = 1107_0° Vrms, Vo = 1101_-120° Vms, and V. = 1107_120° Vrms. The line impedance are each ZL = 10 + j5 12. The impedance of the A-connected load are each ZA = 75 + j225 1. Determine the phase currents in the A-connected load. ZL] b TAB & A B Zi IGB Zo Voy IV Tech...
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