Explain in detail about the star delta transformation technique of solving three phase unbalanced circuits.
Explain in detail about the star delta transformation technique of solving three phase unbalanced circuits.
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Explain in detail about the star delta transformation technique
of solving three phase unbalanced circuits.
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...
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 impedance of Z, -2j The load series impedance per phase is Z, -10+40j a) The load sequence impednace matrix Zo b) The symmetrical components of voltage. (magnitude and angle) ground through Determine
A three-phase unbalanced source with the following phase to neutral voltages: 300-120 20090 10ol-30 1001-30 is applied...
A three-phase generator connected in a star generates a phase voltage of Vθ = 24 KVrms and supplies a three-phase transformer connected in star. The transformation ratio is 115: 1. Each of the three c...
A three-phase generator connected in a star generates a phase voltage of Vθ = 24 KVrms and supplies a three-phase transformer connected in star. The transformation ratio is 115: 1. Each of the three coils of the secondary transformer feed 3 equal charges each composed of them by R = 18Ω, XC = 2Ω and XL = 20Ω. a) Calculate the phase, line and charge currents after the b) Calculate the phase, line and load voltages c) Calculate the Apparent...
1- need to tell the methods and explain then calculate 2- for one and three-phase 1- can be a work about diodes best regards Electrotechnics Methods of solving linear DC circuits. Superposition me...
1- need to tell the methods and explain then
calculate
2- for one and three-phase
1- can be a work about diodes
best regards
Electrotechnics Methods of solving linear DC circuits. Superposition method and Thevenini method. 1. Calculate the currents in the following circuit using the superposition and Thevenini method. Data: R1-200 Ω; R2-200 Ω,R3-100 Ω E1-200 V; E2-100 V; E3-200 V ind all the currents I1, 12 and 13. R1 R3 ЕЗ E1 R2 E2 Apparatus and methods for...
ELE2601/101/3/2019 QUESTION 4 A 400 V three-phase, 50 Hz system, ABC sequence supplies the following loads: A star-connected load with the following phase impedances: A delta-connected load of eq...
ELE2601/101/3/2019 QUESTION 4 A 400 V three-phase, 50 Hz system, ABC sequence supplies the following loads: A star-connected load with the following phase impedances: A delta-connected load of equal phase impedances: Use VAB as reference and determine the following quantities: 4.1 The magnitude and angle of the currents drawn by the star-connected load (IAN; lBN; ICN). 4.1.1 The magnitude and angle of the phase (IAB; lBc; ICa) and line (lA; ls; Ic) currents drawn by the delta-connected load. 4.1.2 (12)...
(BEKG 2433/BEKP 2323) QUESTION 2 a) A balance three-phase system comprises of star-connected generator and delta-connected...
(BEKG 2433/BEKP 2323) QUESTION 2 a) A balance three-phase system comprises of star-connected generator and delta-connected load are shown in Figure Q2(a). The system are operated based on positive sequence with line voltage Vy - 2402-15°V and load impedance ZxvZYB -ZR - 15+j622. Analyze the phase difference between the line and phase currents with the proper calculation and show the phasor diagrams (11 marks) Zar 1 Y Zvo Figure Q2 (a): A balance three-phase system.
Q2. A three-phase unbalanced delta-connected load containing impedances Z1, Z2 and resistor R3 is connected to...
Q2. A three-phase unbalanced delta-connected load containing impedances Z1, Z2 and resistor R3 is connected to a three-phase power source of 380 V, 50 Hz in positive sequence A-B-C as shown in figure Q2. It is known that line current Ic is 54 292° A. The power consumption of load R3 is 18050 W. The impedance of Zi is 20 -70° 2. By taking VAB as reference, calculate B BB/ Z2 TBC figure Q2 (a) the line voltage VAB, VBC...
5 Three inductive coils each of inductance 45mH are connected in star to a 3 phase...
5 Three inductive coils each of inductance 45mH are connected in star to a 3 phase 400V, 50 Hz supply. Calculate the inductance of each coil, which when connected in delta to take the same supply voltage and line current, also find the power delivered at unity power factor for both star and delta connected load. (6 Marks)
508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an...
508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an aboc phase-sequence and is connected in delta. There are two rallel wye-connected loads. The phase impedance of load i and load 2 is 4 The line impedance connecting the source to the loads is 0.3 + j0.2 2. If the curre IAN! = 10/20-Arms, find the delta currents in the source 4 Ω and 10 +/4 Ω, respectively. nt in the a phase of...
A three-phase generator connected in a star generates a phase voltage of Vθ = 2500 Vrms...
A three-phase generator connected in a star generates a phase voltage of Vθ = 2500 Vrms and supplies a delta-connected three-phase load. The three phases of the generator feed 3 equal charges each composed of R = 10 Ω, XC = 4Ω and XL = 10Ω. a) Calculate the phase, line and load currents b) Calculate the phase, line and load voltages c) Calculate the powers of Apparent (S), Real (P) and Reactive (Q) delivered by the generator d) Calculate...
b) The load connected to a three-phase supply comprises three similar coils connected in star. If...
b) The load connected to a three-phase supply comprises three similar coils connected in star. If the phase currents are 10A and the total active power and power factor absorb by the loads are 3kW and 0.8 lagging, respectively. Find: i. The magnitude of phase and line voltages (4 marks) ii. Total apparent power (1 mark) iii. The impedance of each coil. (2 marks) c) If the coil in Q3(b) are now connected in delta to the same three-phase supply,...
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 impedance of Z, -2j The load series impedance per phase is Z, -10+40j a) The load sequence impednace matrix Zo b) The symmetrical components of voltage. (magnitude and angle) ground through Determine
A three-phase unbalanced source with the following phase to neutral voltages: 300-120 20090 10ol-30 1001-30 is applied...
1- need to tell the methods and explain then
calculate
2- for one and three-phase
1- can be a work about diodes
best regards
Electrotechnics Methods of solving linear DC circuits. Superposition method and Thevenini method. 1. Calculate the currents in the following circuit using the superposition and Thevenini method. Data: R1-200 Ω; R2-200 Ω,R3-100 Ω E1-200 V; E2-100 V; E3-200 V ind all the currents I1, 12 and 13. R1 R3 ЕЗ E1 R2 E2 Apparatus and methods for...
ELE2601/101/3/2019 QUESTION 4 A 400 V three-phase, 50 Hz system, ABC sequence supplies the following loads: A star-connected load with the following phase impedances: A delta-connected load of equal phase impedances: Use VAB as reference and determine the following quantities: 4.1 The magnitude and angle of the currents drawn by the star-connected load (IAN; lBN; ICN). 4.1.1 The magnitude and angle of the phase (IAB; lBc; ICa) and line (lA; ls; Ic) currents drawn by the delta-connected load. 4.1.2 (12)...
(BEKG 2433/BEKP 2323) QUESTION 2 a) A balance three-phase system comprises of star-connected generator and delta-connected load are shown in Figure Q2(a). The system are operated based on positive sequence with line voltage Vy - 2402-15°V and load impedance ZxvZYB -ZR - 15+j622. Analyze the phase difference between the line and phase currents with the proper calculation and show the phasor diagrams (11 marks) Zar 1 Y Zvo Figure Q2 (a): A balance three-phase system.
Q2. A three-phase unbalanced delta-connected load containing impedances Z1, Z2 and resistor R3 is connected to a three-phase power source of 380 V, 50 Hz in positive sequence A-B-C as shown in figure Q2. It is known that line current Ic is 54 292° A. The power consumption of load R3 is 18050 W. The impedance of Zi is 20 -70° 2. By taking VAB as reference, calculate B BB/ Z2 TBC figure Q2 (a) the line voltage VAB, VBC...
5 Three inductive coils each of inductance 45mH are connected in star to a 3 phase 400V, 50 Hz supply. Calculate the inductance of each coil, which when connected in delta to take the same supply voltage and line current, also find the power delivered at unity power factor for both star and delta connected load. (6 Marks)
508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an aboc phase-sequence and is connected in delta. There are two rallel wye-connected loads. The phase impedance of load i and load 2 is 4 The line impedance connecting the source to the loads is 0.3 + j0.2 2. If the curre IAN! = 10/20-Arms, find the delta currents in the source 4 Ω and 10 +/4 Ω, respectively. nt in the a phase of...
b) The load connected to a three-phase supply comprises three similar coils connected in star. If the phase currents are 10A and the total active power and power factor absorb by the loads are 3kW and 0.8 lagging, respectively. Find: i. The magnitude of phase and line voltages (4 marks) ii. Total apparent power (1 mark) iii. The impedance of each coil. (2 marks) c) If the coil in Q3(b) are now connected in delta to the same three-phase supply,...
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