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QUESTION 1 In the circuit shown below a three-phase, three-wire, Y-connected power system is driving a...
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...
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a ...
Please show how this transformers problem is done. Thanks!
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a balanced three-phase load (it doesn't matter whether the load is Y or Delta connected). The voltage and current of the source are: van (t) - 340 sin (377t + 0.5236) ia(t) 100sin (377t 0.87266) Calculate the following: (a) The rms phase voltage (Van, magnitude and phase). (b) The rms line-to-line voltage (Vab, magnitude and phase) (c) The...
Question 25 A balanced 3-phase Y-connected power supplies an office building through a four-wire distribution. The...
Question 25 A balanced 3-phase Y-connected power supplies an office building through a four-wire distribution. The circuit operates at 60 Hz. The voltage at the source is such that ? is taken in reference value and its value is 380 V in rms value and phase sequence ABC (positive). All the distribution line conductors are of the same material and have equal cross-sections. Considering the length of the line and the characteristics of the electrical cables, the impedances neutral conductors...
A Δ-connected source supplies power to a Y-connected load in a three-phase balanced system. Given that...
A Δ-connected source supplies power to a Y-connected load in a three-phase balanced system. Given that the line impedance is (1 + j1) Ω per phase while the load impedance is (6 + j4) Ω per phase, find the magnitude of the line voltage at the load. Assume the source phase voltage Vab= 208 ∠0° V rms. The magnitude of the line voltage at the load is _______ Vrms.
4. (20 points) The three-phase Y-connected power supply has a line-to-neutral voltage KIN of 1.220° KV....
4. (20 points) The three-phase Y-connected power supply has a line-to-neutral voltage KIN of 1.220° KV. A balanced-A load consisting of impedance Z1-20 30 Ω per phase is in parallel with a balanced-Y load having phase impedance of Z2 = 15245° Ω. Identical line impedances of Z1 = 3L15。Ω are in each of the three lines connecting the combined loads to the phase supply (a) Draw the per-phase equivalent circuit; (b) Find the line-to-line voltage Vab (magnitude and angle) at...
Problem5 A balanced Y-Y four-wire system has phase voltages Van-1 10L0。V, Vbn-1104200 V, Ven 1102-1200 V....
Problem5 A balanced Y-Y four-wire system has phase voltages Van-1 10L0。V, Vbn-1104200 V, Ven 1102-1200 V. The load impedance per phase is 19 +j13 2, and the line impedance per phase is 1+,2 Ω. a) Construct the a-phase equivalent circuit of the system. b) Calculate the line currents and neutral current. c) Calculate the three phase voltages at the load VAN, VBN and Vcv d) Calculate the average power per phase delivered to the Y- connected load
Problem 2:Three phase droult (42 pts) A three-phase wye connected generator ﹃plies two paral el loads...
Problem 2:Three phase droult (42 pts) A three-phase wye connected generator ﹃plies two paral el loads through a feeder. tad is matalaeeday connected load and load 2 is a balanced delta connected loed. System data: Generator: Rating S-5oo MVA; Line Voltage: Veu-25KV; Feeder impedance: 7-(0.08 jo 62) O/mile, length-8 miles Generator reactance Xe- 1108: P.-75MW pf c-o.78 (all the power factors are lagging) (a) Draw the one-line diagram and a three-phase equivalent circuit (8pts) (b) Calculate the generator and feeder...
AC Circuit Analysis 3. Three balanced three-phase loads are connected in parallel. Load 1 is Y-...
AC Circuit Analysis
3. Three balanced three-phase loads are connected in parallel. Load 1 is Y- connected with an impedance of 400 + j300N/0 load 2 is A-connected with an impedance of 2400 – 18001/¢, and load 3 is 270 +39000kVA. The loads are fed from a distribution line with an impedance of 1 + j4N/0. The magnitude of the line-to-neutral voltage at the load end of the line is 1673 kv. a) Calculate the total complex power at the...
1. The phase voltage at the terminals of a balanced three-phase Y-connected load has an amplitude...
1. The phase voltage at the terminals of a balanced three-phase Y-connected load has an amplitude of 120V. The load has an impedance of 39 + j28Ω per phase. It is fed from a line having an impedance of 0.8 + j1.5 Ω per phase. The Y-connected source at the sending end of the line has an internal impedance of 0.2 + j0.5 Ω per phase. Calculate: a) The three line currents b) The three-phase voltages at the load c) ...
Q1.A balanced 3-Phase Y-connected generator with positive sequence has an impedance of 0.2 + 0.5j ф...
Q1.A balanced 3-Phase Y-connected generator with positive sequence has an impedance of 0.2 + 0.5j ф and an intemal voltage of 120 V/d. The generator feeds a balanced 3- Phase Y-connected load having an impedance of 39 + 28j Ωφ. The impedance of the line connecting the generator to the load is 0.8 + 1Sj Ωφ. The a-phase internal voltage of the generator is specified as the reference phasor a) Construct the a-phase equivalent circuit of the system b) Calculate...
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...
Please show how this transformers problem is done. Thanks!
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a balanced three-phase load (it doesn't matter whether the load is Y or Delta connected). The voltage and current of the source are: van (t) - 340 sin (377t + 0.5236) ia(t) 100sin (377t 0.87266) Calculate the following: (a) The rms phase voltage (Van, magnitude and phase). (b) The rms line-to-line voltage (Vab, magnitude and phase) (c) The...
4. (20 points) The three-phase Y-connected power supply has a line-to-neutral voltage KIN of 1.220° KV. A balanced-A load consisting of impedance Z1-20 30 Ω per phase is in parallel with a balanced-Y load having phase impedance of Z2 = 15245° Ω. Identical line impedances of Z1 = 3L15。Ω are in each of the three lines connecting the combined loads to the phase supply (a) Draw the per-phase equivalent circuit; (b) Find the line-to-line voltage Vab (magnitude and angle) at...
Problem5 A balanced Y-Y four-wire system has phase voltages Van-1 10L0。V, Vbn-1104200 V, Ven 1102-1200 V. The load impedance per phase is 19 +j13 2, and the line impedance per phase is 1+,2 Ω. a) Construct the a-phase equivalent circuit of the system. b) Calculate the line currents and neutral current. c) Calculate the three phase voltages at the load VAN, VBN and Vcv d) Calculate the average power per phase delivered to the Y- connected load
Problem 2:Three phase droult (42 pts) A three-phase wye connected generator ﹃plies two paral el loads through a feeder. tad is matalaeeday connected load and load 2 is a balanced delta connected loed. System data: Generator: Rating S-5oo MVA; Line Voltage: Veu-25KV; Feeder impedance: 7-(0.08 jo 62) O/mile, length-8 miles Generator reactance Xe- 1108: P.-75MW pf c-o.78 (all the power factors are lagging) (a) Draw the one-line diagram and a three-phase equivalent circuit (8pts) (b) Calculate the generator and feeder...
AC Circuit Analysis
3. Three balanced three-phase loads are connected in parallel. Load 1 is Y- connected with an impedance of 400 + j300N/0 load 2 is A-connected with an impedance of 2400 – 18001/¢, and load 3 is 270 +39000kVA. The loads are fed from a distribution line with an impedance of 1 + j4N/0. The magnitude of the line-to-neutral voltage at the load end of the line is 1673 kv. a) Calculate the total complex power at the...
Q1.A balanced 3-Phase Y-connected generator with positive sequence has an impedance of 0.2 + 0.5j ф and an intemal voltage of 120 V/d. The generator feeds a balanced 3- Phase Y-connected load having an impedance of 39 + 28j Ωφ. The impedance of the line connecting the generator to the load is 0.8 + 1Sj Ωφ. The a-phase internal voltage of the generator is specified as the reference phasor a) Construct the a-phase equivalent circuit of the system b) Calculate...
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