Fundamentals of Electric Circuits
6th Edition
ISBN: 9780078028229
Author: Charles K Alexander, Matthew Sadiku
Publisher: McGraw-Hill Education
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Chapter 12.4, Problem 3PP
One line voltage of a balanced Y-connected source is
Answer:
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Ży = 69 + 36j ohms
Zw = 9 + 6j ohms
Line to line Voltage = 420V
Assume positive sequence and Van with zero angle.
Van
Zw
Zy
a
Von
Zw
Zy
b
B
H10
Ven
Zw
Zy
C
Determine the line to line voltage V-AB at the terminal point of the load.
Select your answer.
368.97 angle -149.25V
368.97 angle 149.25V
368.97 angle -90.75V
368.97 angle 29.25
electrical eng help pls can you solve i and ii if possible
Plese help with all 3 sub-parts
Chapter 12 Solutions
Fundamentals of Electric Circuits
Ch. 12.2 - Given that Vbn=22030V, find Van and Vcn, assuming...Ch. 12.3 - A Y-connected balanced three-phase generator with...Ch. 12.4 - One line voltage of a balanced Y-connected source...Ch. 12.5 - A positive-sequence, balanced -connected source...Ch. 12.6 - In a balanced -Y circuit, Vab=44015 and ZY = (12 +...Ch. 12.7 - For the Y-Y circuit in Practice Prob. 12.2,...Ch. 12.7 - Calculate the line current required for a 30-kW...Ch. 12.7 - Assume that the two balanced loads in Fig....Ch. 12.8 - The unbalanced -load of Fig. 12.24 is supplied by...Ch. 12.8 - Find the line currents in the unbalanced...
Ch. 12.9 - Prob. 11PPCh. 12.9 - For the unbalanced circuit in Fig. 12.32, use...Ch. 12.10 - Repeat Example 12.13 for the network in Fig. 12.24...Ch. 12.10 - Let the line voltage VL = 208 V and the wattmeter...Ch. 12.10 - If the load in Fig. 12.35 is delta-connected with...Ch. 12 - What is the phase sequence of a three-phase motor...Ch. 12 - If in an acb phase sequence, , then Vcn is:Ch. 12 - Which of these is not a required condition for a...Ch. 12 - Prob. 4RQCh. 12 - Prob. 5RQCh. 12 - In a Y-Y system, a line voltage of 220 V produces...Ch. 12 - In a - system, a phase voltage of 100 V produces a...Ch. 12 - When a Y-connected load is supplied by voltages in...Ch. 12 - Prob. 9RQCh. 12 - Prob. 10RQCh. 12 - If Vab = 400 V in a balanced Y-connected...Ch. 12 - What is the phase sequence of a balanced...Ch. 12 - Given a balanced Y-connected three-phase generator...Ch. 12 - A three-phase system with abc sequence and VL =...Ch. 12 - For a Y-connected load, the time-domain...Ch. 12 - Using Fig. 12.41, design a problem to help other...Ch. 12 - Obtain the line currents in the three-phase...Ch. 12 - In a balanced three-phase Y-Y system, the source...Ch. 12 - A balanced Y-Y four-wire system has phase voltages...Ch. 12 - For the circuit in Fig. 12.43, determine the...Ch. 12 - In the Y- system shown in Fig. 12.44, the source...Ch. 12 - Using Fig. 12.45, design a problem to help other...Ch. 12 - In the balanced three-phase Y- system in Fig....Ch. 12 - Obtain the line currents in the three-phase...Ch. 12 - The circuit in Fig. 12.48 is excited by a balanced...Ch. 12 - A balanced delta-connected load has a phase...Ch. 12 - A positive sequence wye-connected source where ,...Ch. 12 - If Van = 22060 V in the network of Fig. 12.49,...Ch. 12 - For the - circuit of Fig. 12.50, calculate the...Ch. 12 - Prob. 20PCh. 12 - Three 440-V generators form a delta-connected...Ch. 12 - Find the line currents IaA, IbB, and IcC in the...Ch. 12 - A balanced delta connected source is connected to...Ch. 12 - A balanced delta-connected source has phase...Ch. 12 - In the circuit of Fig. 12.54, if , , , find the...Ch. 12 - Using Fig. 12.55, design a problem to help other...Ch. 12 - A -connected source supplies power to a...Ch. 12 - The line-to-line voltages in a Y-load have a...Ch. 12 - A balanced three-phase Y- system has V rms and Z =...Ch. 12 - In Fig. 12.56, the rms value of the line voltage...Ch. 12 - A balanced delta-connected load is supplied by a...Ch. 12 - Design a problem to help other students better...Ch. 12 - A three-phase source delivers 4.8 kVA to a...Ch. 12 - A balanced wye-connected load with a phase...Ch. 12 - Three equal impedances, 60 + j30 each, are...Ch. 12 - A 4200-V, three-phase transmission line has an...Ch. 12 - The total power measured in a three-phase system...Ch. 12 - Given the circuit in Fig. 12.57 below, find the...Ch. 12 - Find the real power absorbed by the load in Fig....Ch. 12 - For the three-phase circuit in Fig. 12.59, find...Ch. 12 - A balanced delta-connected load draws 5 kW at a...Ch. 12 - A balanced three-phase generator delivers 7.2 kW...Ch. 12 - Refer to Fig. 12.48. Obtain the complex power...Ch. 12 - A three-phase line has an impedance of 1 + j3 per...Ch. 12 - A balanced wye-connected load is connected to the...Ch. 12 - A three-phase load consists of three 100-...Ch. 12 - The following three parallel-connected three-phase...Ch. 12 - A balanced, positive-sequence wye-connected source...Ch. 12 - Each phase load consists of a 20- resistor and a...Ch. 12 - A balanced three-phase source with VL = 240 V rms...Ch. 12 - Consider the wye-delta system shown in Fig. 12.60....Ch. 12 - A four-wire wye-wye circuit has...Ch. 12 - Using Fig. 12.61, design a problem that will help...Ch. 12 - A balanced three-phase Y-source with VP = 880 V...Ch. 12 - A three-phase supply, with the line-to-line...Ch. 12 - Using Fig. 12.63, design a problem to help other...Ch. 12 - Determine the line currents for the three-phase...Ch. 12 - Solve Prob. 12.10 using PSpice or MultiSim. For...Ch. 12 - The source in Fig. 12.65 is balanced and exhibits...Ch. 12 - Use PSpice or MultiSim to determine Io in the...Ch. 12 - Given the circuit in Fig. 12.67, use PSpice or...Ch. 12 - Using Fig. 12.68, design a problem to help other...Ch. 12 - Use PSpice or MultiSim to find currents IaA and...Ch. 12 - For the circuit in Fig. 12.58, use PSpice or...Ch. 12 - A balanced three-phase circuit is shown in Fig....Ch. 12 - A three-phase, four-wire system operating with a...Ch. 12 - As shown in Fig. 12.72, a three-phase four-wire...Ch. 12 - Meter readings for a three-phase wye-connected...Ch. 12 - A certain store contains three balanced...Ch. 12 - The two-wattmeter method gives P1=1200W and...Ch. 12 - In Fig. 12.73, two wattmeters are properly...Ch. 12 - If wattmeters W1 and W2 are properly connected...Ch. 12 - For the circuit displayed in Fig. 12.74, find the...Ch. 12 - Predict the wattmeter readings for the circuit in...Ch. 12 - Prob. 75PCh. 12 - Show that the I2R losses will be higher for a...Ch. 12 - A three-phase generator supplied 10 kVA at a power...Ch. 12 - Prob. 78CPCh. 12 - A balanced three-phase generator has an abc phase...Ch. 12 - A balanced three-phase source furnishes power to...Ch. 12 - A professional center is supplied by a balanced...Ch. 12 - A balanced three-phase system has a distribution...Ch. 12 - A commercially available three-phase inductive...Ch. 12 - Figure 12.76 displays a three-phase...Ch. 12 - Design a three-phase heater with suitable...Ch. 12 - For the single-phase three-wire system in Fig....Ch. 12 - Consider the single-phase three-wire system shown...
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- In a balanced delta connected 3Ø circuit, the load in each branch consists of a 10 Ωresistance in series with an inductance 0.0318H. If the line voltage is 400 V at 50 Hz.Determine the (a) Line Current and total power in the circuit.arrow_forwardFor the balanced A-A circuit of the figure below, calculate the phase and line currents (lAs and Ia). A 30 2 173/0 V j10 2 30 Ω 173/120° V E B 30 2 10 2 173 120° V 10 2 C Select one: O lAB = 5.472-18.43° Arms and Iaa= 9.4742-48.43° Arms O laB = 5.47 18.43° A and I4= 9.474248.43° A O IAB = 5.472-18.43° mA and Ig4= 9.474 48.43° mA %3D %3D O lAB = 5.47218.43° A and Ia= 9.474z-48.43°A O IAB = 5.472-18.43° A and lA= 9.4742-48.43 A wwele wwarrow_forwardThe magnitude of the line voltage at the terminals of a balanced Y- connected load is 12800 V. The load impedance is 216 + j63 /p. The load is fed from a line that has an impedance of 0.25 + j2 2/6. Part A What is the magnitude of the line current? Express your answer to four significant figures and include the appropriate units. IL = Submit Part B Vab = Submit μA Value Request Answer What is the magnitude of the line voltage at the source? Express your to five significant ī μÁ 1 Value Units Request Answer ? Units and include the appropriate units. ?arrow_forward
- The output of the balanced positive-sequence three-phase source in the figure is 64 kVA at a lagging factor of 0.8. The line voltage at the source is 256/3 V. power (Figure 1) Find the magnitude of the line voltage at the load. Express your answer in volts to three significant figures. Figure Balanced three-phase source 0.04 2 w 10,2 2 m 0.04 0.2 0 0.04 w 10,2 2 Balanced three-phase load 1 of 1 |VAB= Submit Request Answer Part B V Find the total complex power at the terminals of the load. Express your answer in volt-amperes to three significant figures. Enter your answer in rectangular form. S= Submit Request Answer VAarrow_forwardFor the circuit shown in Fig. below , find a) the phase currents IAB, IBC, and IcCA b) the line currents IA, Ib, and Içc when Z1 = 2.4 - j0.7 N, Z = 8 + j6 N, and Z3 = 20 + j0 N. %3D 480/-120° V 480/0° V Zz В 480/120° Varrow_forwardI do not understand how to complete parts D, E, and F from this balanced three-phased problem. I have figured out the answer to parts A, B, and C. Please help with parts D, E, and F.arrow_forward
- Someone already did this problem but with the wrong values that weren't give? How can I get a question back when they were completely wrong? But need help.arrow_forwardi need the answer quicklyarrow_forwardA single phase transmission line is delivering 500 kVA load at 2 kV. Its resistance is 0-2 0 and inductive reactance is 0-4 0. Determine the voltage regulation if the load power factor is 0-707 lagging. O 8.5 % O 7.2 % O 5.3 % O 6.4 %arrow_forward
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