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03) A single-phase, nonlinear load was found to have the data shown below. Find the rms...
2. Consider the given 3-phase circuit. Assume the load voltage, PAB = 30L30, Kms (3) Are...
2. Consider the given 3-phase circuit. Assume the load voltage, PAB = 30L30, Kms (3) Are the loads connected in Wye or Delta configuration? Explain your selection. b. a. (3) Are the sources connected in Wye or Delta configuration? Explain your selection. (5) Draw the single-phase equivalent of the given circuit. Label the line-to-neutral voltage numerically. c. d. (4) Calculate the rms line current phasor in each phase. e. (5) Calculate the rms source voltage phasor in each phase. f...
a) Find the magnitude of the line current IaA (A rms) b) Find the phase of...
a) Find the magnitude of the line current IaA (A rms)
b) Find the phase of the line current IaA. (Phase deg)
c) Find the magnitude of VAB the line-to-line load voltage (V
rms)
d) Find the phase of VAB (deg)
e) Find the magnitude of the load phase current IAB (A rms)
f) Find the phase of IAB (deg)
g) Find the total power delivered to the load (kW)
h) Find the power lost in the line. (kW)
A...
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 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...
A balanced wye-connected load and a balanced delta con- hected load are supplied by a three-phase...
A balanced wye-connected load and a balanced delta con- hected load are supplied by a three-phase 480-V 50 HZ generator. The ranch impedance of the wye and della are 10/30° 2 and 20/-50° 2. respectively. Determine the active and reactive powers drawn by each three loads. Determine the phasor voltage and phase any one branch of each three-phas e branch of each three-phase load, and substitute into wer equation for balanced three-phase loads. Given ise angle of V is 30...
2. A load is connected to a voltage of 1320 volts at 60 Hz. The load...
2. A load is connected to a voltage of 1320 volts at 60 Hz. The load dissipates 100 kW with a 0.867 power factor. Specify the capacitance needed to correct the power factor to being 1. 3. Consider a circuit for a single-phase AC power system, where a 200 volt AC voltage source is delivering power to a loads. Find the true power, reactive power and apparent power delivered by 150 mA current (Impedance phase angle 0 = 30°) 3....
The three figures below show a balanced three phase Delta, its Wye equivalent and the single...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single phase equivalent of the three phase Wye. All three representations have a complex load ZALD or ZYLD and a complex line impedance ZLINE Refer to these diagrams when answering questions 1-4. ZLINE Vab= 679 L 30° ZLINE ZALD ZLINE = 2+1 DELTA ZALD= 18+24j2 LINE ZLINE ZLINE ZYLD 7yun WYE WYE ZYLD ZLINE ZLINE Van Complex Load ZYLD Single Line WYE 1) In the...
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...
1 A single phase AC system Consider a single phase AC distribution system in which there...
1 A single phase AC system Consider a single phase AC distribution system in which there a single home connected to a 10kVA service transformer. Let’s assume that the primary of the distribution transformer can be modeled as an ideal 240V (rms) AC source and that the effective impedance of the transformer is 2% resistance and 3% reactance. (See lecture notes for converting % to Ohms). Connected to the secondary of the transformer is 200 ft of #6 AWG aluminum...
8) The motor model for a 3-phase 480V 1750 RPM induction motor is shown below. Stray...
8) The motor model for a 3-phase 480V 1750 RPM induction motor is shown below. Stray losses are 1000W. Assuming it is running at full rated load in the United States, find: 0.01 j0.14 j0.14 0 _ 0.01 A 19 j16 30.01/18 ) Synchronous Speed= RPM Number of poles= Poles Slip= Stator current iz = Amps Rotor current lz= Amps Magnetization currently = Amps Watts HP Volts Power across the air gap= h) 3-phase shaft (brake) horsepower= Terminal Voltage "V"=...
2. Consider the given 3-phase circuit. Assume the load voltage, PAB = 30L30, Kms (3) Are the loads connected in Wye or Delta configuration? Explain your selection. b. a. (3) Are the sources connected in Wye or Delta configuration? Explain your selection. (5) Draw the single-phase equivalent of the given circuit. Label the line-to-neutral voltage numerically. c. d. (4) Calculate the rms line current phasor in each phase. e. (5) Calculate the rms source voltage phasor in each phase. f...
a) Find the magnitude of the line current IaA (A rms)
b) Find the phase of the line current IaA. (Phase deg)
c) Find the magnitude of VAB the line-to-line load voltage (V
rms)
d) Find the phase of VAB (deg)
e) Find the magnitude of the load phase current IAB (A rms)
f) Find the phase of IAB (deg)
g) Find the total power delivered to the load (kW)
h) Find the power lost in the line. (kW)
A...
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 balanced wye-connected load and a balanced delta con- hected load are supplied by a three-phase 480-V 50 HZ generator. The ranch impedance of the wye and della are 10/30° 2 and 20/-50° 2. respectively. Determine the active and reactive powers drawn by each three loads. Determine the phasor voltage and phase any one branch of each three-phas e branch of each three-phase load, and substitute into wer equation for balanced three-phase loads. Given ise angle of V is 30...
2. A load is connected to a voltage of 1320 volts at 60 Hz. The load dissipates 100 kW with a 0.867 power factor. Specify the capacitance needed to correct the power factor to being 1. 3. Consider a circuit for a single-phase AC power system, where a 200 volt AC voltage source is delivering power to a loads. Find the true power, reactive power and apparent power delivered by 150 mA current (Impedance phase angle 0 = 30°) 3....
The three figures below show a balanced three phase Delta, its Wye equivalent and the single phase equivalent of the three phase Wye. All three representations have a complex load ZALD or ZYLD and a complex line impedance ZLINE Refer to these diagrams when answering questions 1-4. ZLINE Vab= 679 L 30° ZLINE ZALD ZLINE = 2+1 DELTA ZALD= 18+24j2 LINE ZLINE ZLINE ZYLD 7yun WYE WYE ZYLD ZLINE ZLINE Van Complex Load ZYLD Single Line WYE 1) In 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...
8) The motor model for a 3-phase 480V 1750 RPM induction motor is shown below. Stray losses are 1000W. Assuming it is running at full rated load in the United States, find: 0.01 j0.14 j0.14 0 _ 0.01 A 19 j16 30.01/18 ) Synchronous Speed= RPM Number of poles= Poles Slip= Stator current iz = Amps Rotor current lz= Amps Magnetization currently = Amps Watts HP Volts Power across the air gap= h) 3-phase shaft (brake) horsepower= Terminal Voltage "V"=...
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