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j9N3 - 120. Von Ven Nizomj98 7912 Figure 3 By using the same figure as Figure...
a) Figure 3 shows a Y-connected source driving a A-connected load. This system has a balanced load where Zs-Zb-Z-502...
a) Figure 3 shows a Y-connected source driving a A-connected load. This system has a balanced load where Zs-Zb-Z-50225°2. The polar expression for VLI is 784197e V. From Figure 3, Lu V. Figure 3 i) Determine the load voltages. (3 Marks) ii Determine the magnitude the line currents. (1 Mark) ) Determine the magnitude of phase currents. (1 Mark) iv) Draw a phasor diagram of phase voltages and line voltages. (6 Marks) v) Determine the load currents. 3 Marks)
a)...
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...
1. A 50 Hz 3-phase Have wave uncontrolled rectifier circuit is used to supply a resistive load of...
1. A 50 Hz 3-phase Have wave uncontrolled rectifier circuit is used to supply a resistive load of 100 ohms. The supply is unbalanced and defined as v.-127.28 cos (ot) V 127.28 sin (ot-0.5236) V n63.64 cos (ot+2.0944) V a) Draw the circuit diagram. b) Draw the three phase voltages wave forms. c) Use phasor diagram or any other method to obtain the line voltages v and d) Draw the line voltages v and v wave forms. e) Derive an...
Question 5 6+3j ohm 4 o | 110/0° Ꮩ 11 +9j Ohm 110-240 V 110-120° v...
Question 5 6+3j ohm 4 o | 110/0° Ꮩ 11 +9j Ohm 110-240 V 110-120° v B 11 +9j Ohm N 6+3j ohm 11 +9j Ohm 6+3j ohm Figure 1. For the circuit of the three-wire Y-Y system in Figure 1 above, a) Calculate the total impedance Z b) Calculate the current in phase a c) Calculate the load phase voltage VAN d) Calculate the current in phase b e) Calculate the load phase voltage Von f) Calculate the current...
1. A balanced delta-connected load has 12 +j16 ohms impedance per phase, and is energized by...
1. A balanced delta-connected load has 12 +j16 ohms impedance per phase, and is energized by 208 V line-to-line. The phase sequence is ‘a-b-c'. (a) Find the line and phase voltages and currents at the delta load, and show them in a phasor diagram. (b) If the delta-connected load is rewired and connected in wye, show the line and phase voltages and currents at the wye load in a phasor diagram.
3. For the circuit shown in Figure 1, + VR - R = 3k 494 ET...
3. For the circuit shown in Figure 1, + VR - R = 3k 494 ET V 4.7 uF E = 8V sin(20,000t +60° -VL + Z = ? m L = 0.5 H Figure 1 i. ii. iv. v. vi. vii. Find the total impedance Zr in polar form. Draw the impedance diagram Find the current and the voltages VR, Vi and Vc in phasor form. Draw the phasor diagram of the voltages E, VR, V., and Vc and...
P 5.103 A balanced positive-sequence wye-connected 60-Hz three-phase source has line-to-line voltages of VL 440 V...
P 5.103 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 05-11 inductance in series with a 30Ω resistance. Assume that the phase of Van is zero. Part A Pl Find the line-to-neutral voltage phasor Van Enter your answer using polar notation. Express argument in degrees. 이미? Subrmit X Incorrect, Try Again; 5 attempts remaining Part B...
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in...
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u. c- Find the fault current due to a bolted-three-phase short circuit in the middle of line 1- 3. [5 points d- Find the voltages at buses 1 and 2 under the fault conditions of part c above [5 points] 0.225 pu. 0.035 pu. 0.2p.u ? 0.15 p.u. 0.215...
Experiment # 8-Prelab Measurement of Single Phase AC Power by Wattmeter 8.1.The measured current in Figure...
Experiment # 8-Prelab Measurement of Single Phase AC Power by Wattmeter 8.1.The measured current in Figure 8.3 is 10 A and the measured power is 900 W. Consider that the wattmeter is ideal (doesn't change the voltage and current through the load) and determine: a) The resistance of the motor coil (R); b) The inductance of the motor coil (L); c) The power factor of the motor coil (cosp) d) The complex power (S); e) The reactive power (Q): f...
a) Figure 3 shows a Y-connected source driving a A-connected load. This system has a balanced load where Zs-Zb-Z-50225°2. The polar expression for VLI is 784197e V. From Figure 3, Lu V. Figure 3 i) Determine the load voltages. (3 Marks) ii Determine the magnitude the line currents. (1 Mark) ) Determine the magnitude of phase currents. (1 Mark) iv) Draw a phasor diagram of phase voltages and line voltages. (6 Marks) v) Determine the load currents. 3 Marks)
a)...
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...
1. A 50 Hz 3-phase Have wave uncontrolled rectifier circuit is used to supply a resistive load of 100 ohms. The supply is unbalanced and defined as v.-127.28 cos (ot) V 127.28 sin (ot-0.5236) V n63.64 cos (ot+2.0944) V a) Draw the circuit diagram. b) Draw the three phase voltages wave forms. c) Use phasor diagram or any other method to obtain the line voltages v and d) Draw the line voltages v and v wave forms. e) Derive an...
Question 5 6+3j ohm 4 o | 110/0° Ꮩ 11 +9j Ohm 110-240 V 110-120° v B 11 +9j Ohm N 6+3j ohm 11 +9j Ohm 6+3j ohm Figure 1. For the circuit of the three-wire Y-Y system in Figure 1 above, a) Calculate the total impedance Z b) Calculate the current in phase a c) Calculate the load phase voltage VAN d) Calculate the current in phase b e) Calculate the load phase voltage Von f) Calculate the current...
1. A balanced delta-connected load has 12 +j16 ohms impedance per phase, and is energized by 208 V line-to-line. The phase sequence is ‘a-b-c'. (a) Find the line and phase voltages and currents at the delta load, and show them in a phasor diagram. (b) If the delta-connected load is rewired and connected in wye, show the line and phase voltages and currents at the wye load in a phasor diagram.
3. For the circuit shown in Figure 1, + VR - R = 3k 494 ET V 4.7 uF E = 8V sin(20,000t +60° -VL + Z = ? m L = 0.5 H Figure 1 i. ii. iv. v. vi. vii. Find the total impedance Zr in polar form. Draw the impedance diagram Find the current and the voltages VR, Vi and Vc in phasor form. Draw the phasor diagram of the voltages E, VR, V., and Vc and...
P 5.103 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 05-11 inductance in series with a 30Ω resistance. Assume that the phase of Van is zero. Part A Pl Find the line-to-neutral voltage phasor Van Enter your answer using polar notation. Express argument in degrees. 이미? Subrmit X Incorrect, Try Again; 5 attempts remaining Part B...
Consider the system shown in the single-line diagram of Figure 3. All reactances are shown in per unit to the same base. Assume that the voltage at both sources is 1 p.u. c- Find the fault current due to a bolted-three-phase short circuit in the middle of line 1- 3. [5 points d- Find the voltages at buses 1 and 2 under the fault conditions of part c above [5 points] 0.225 pu. 0.035 pu. 0.2p.u ? 0.15 p.u. 0.215...
Experiment # 8-Prelab Measurement of Single Phase AC Power by Wattmeter 8.1.The measured current in Figure 8.3 is 10 A and the measured power is 900 W. Consider that the wattmeter is ideal (doesn't change the voltage and current through the load) and determine: a) The resistance of the motor coil (R); b) The inductance of the motor coil (L); c) The power factor of the motor coil (cosp) d) The complex power (S); e) The reactive power (Q): f...
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