Given a three phase wye system with phase voltages of 240V and phase current of 25A,...
Given a three phase wye system with phase voltages of 240V and phase current of 25A, determine,
(a) the line current and line-to-line voltage values
(b) the total true power out put of the system, if the power factor equals 0.90
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Given a three phase wye system with phase voltages of 240V and
phase current of 25A,...
Given a three-phase delta system with phase voltage of 240V and phase current of 25A, determine...
Given a three-phase delta system with phase voltage of 240V and phase current of 25A, determine a) the line current and line-to-line voltage values b)the total true power output of the system, if the power factor equals 0.90
A 240V three phase power system supplies two loads in parallel: Load 1: measured line current...
A 240V three phase power system supplies two loads in parallel: Load 1: measured line current 30A, power factor 0.85 lagging, and Load 2: measured power 10kW, reactive power -7.5kVar A. Determine the power factor of load 2. B. Determine the total real power (in kW), reactive power (in kVAR), apparent power (in kVA), power factor and line current (in A) of the two loads.
1. In a three-phase balanced wye-wye system, the source is an abc-positive sequence set of voltag...
1. In a three-phase balanced wye-wye system, the source is an abc-positive sequence set of voltages with Van- 120 20 Vrms. The per phase impedance of the load is 5 +j62. If the line impedance per phase is 0 Ω, find the line currents, the line to line voltages at the source, and the line to line voltages at the load 120 20 Vms 2. In a three-phase balanced wye-wye system, the source is an abc-sequence set of voltages with...
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
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...
Question 2: Three phase circuit. (100p) A wye connected generator supplies a delta connected balanced load...
Question 2: Three phase circuit. (100p) A wye connected generator supplies a delta connected balanced load through short feeder. seree the load line to neutral voltage as reference voltage phase angle zero. 02.1 Q2.2 Q2.3 Q2.4 Draw the equivalent circuit. 10p Calculate the load line-to-neutral voltages and line-to-line voltages. 20p Calculate the delta load currents and feeder currents. 20p Calculate the supply wye connected generator line-to-neutral voltages. Is the obtained values are acceptable? Calculate the generator real and reactive power...
1. [20 points] Choose the right answer. a) If phase current of a wye-connected three-phase system...
1. [20 points] Choose the right answer. a) If phase current of a wye-connected three-phase system is equal to Ipu, then the line current of the same system is equal to V3 pu. i. True ii. False b) A synchronous generator is supplying power to a load with unity power factor at 60 Hz. The load is suddenly disconnected (tripped). What would happen to the internal generated voltage, EA? i. Same as before ii. Increase iii. Decrease c) What is...
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....
UISIZULU Problem 4 A three phase, 5 kW, wye-connected load operate onnected load operates at 0.8...
UISIZULU Problem 4 A three phase, 5 kW, wye-connected load operate onnected load operates at 0.8 power factor lagging with a terminal voltage of 100 V (line to line). The cables connecting e bles connecting each phase of the load to the wye-connected supply has an impedance of (0.25 +0.25) 12. Compute the following: a) Reactive power drawn by the load. b) Real and reactive power losses in the system. me current and line voltage at the source terminals and...
A 240V three phase power system supplies two loads in parallel: Load 1: measured line current 30A, power factor 0.85 lagging, and Load 2: measured power 10kW, reactive power -7.5kVar A. Determine the power factor of load 2. B. Determine the total real power (in kW), reactive power (in kVAR), apparent power (in kVA), power factor and line current (in A) of the two loads.
1. In a three-phase balanced wye-wye system, the source is an abc-positive sequence set of voltages with Van- 120 20 Vrms. The per phase impedance of the load is 5 +j62. If the line impedance per phase is 0 Ω, find the line currents, the line to line voltages at the source, and the line to line voltages at the load 120 20 Vms 2. In a three-phase balanced wye-wye system, the source is an abc-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
Question 2: Three phase circuit. (100p) A wye connected generator supplies a delta connected balanced load through short feeder. seree the load line to neutral voltage as reference voltage phase angle zero. 02.1 Q2.2 Q2.3 Q2.4 Draw the equivalent circuit. 10p Calculate the load line-to-neutral voltages and line-to-line voltages. 20p Calculate the delta load currents and feeder currents. 20p Calculate the supply wye connected generator line-to-neutral voltages. Is the obtained values are acceptable? Calculate the generator real and reactive power...
1. [20 points] Choose the right answer. a) If phase current of a wye-connected three-phase system is equal to Ipu, then the line current of the same system is equal to V3 pu. i. True ii. False b) A synchronous generator is supplying power to a load with unity power factor at 60 Hz. The load is suddenly disconnected (tripped). What would happen to the internal generated voltage, EA? i. Same as before ii. Increase iii. Decrease c) What is...
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....
UISIZULU Problem 4 A three phase, 5 kW, wye-connected load operate onnected load operates at 0.8 power factor lagging with a terminal voltage of 100 V (line to line). The cables connecting e bles connecting each phase of the load to the wye-connected supply has an impedance of (0.25 +0.25) 12. Compute the following: a) Reactive power drawn by the load. b) Real and reactive power losses in the system. me current and line voltage at the source terminals and...
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