- 12.12.1: Given that Vbn = 220 30 V, find Van and Vcn, assuming a positive (a...
- 12.12.2: A Y-connected balanced three-phase generator with an impedance of 0...
- 12.12.3: One line voltage of a balanced Y-connected source is VAB = 120 20 V...
- 12.12.4: A positive-sequence, balanced -connected source supplies a balanced...
- 12.12.5: In a balanced -Y circuit, Vab = 440 15 and ZY = (12 + j15) . Calcul...
- 12.12.6: For the Y-Y circuit in Practice Prob. 12.2, calculate the complex p...
- 12.12.7: Calculate the line current required for a 30-kW three-phase motor h...
- 12.12.8: Assume that the two balanced loads in Fig. 12.22(a) are supplied by...
- 12.12.9: The unbalanced -load of Fig. 12.24 is supplied by balanced line-to-...
- 12.12.10: Find the line currents in the unbalanced three-phase circuit of Fig...
- 12.12.11: Refer to the balanced Y-Y circuit of Fig. 12.29. Use PSpice to find...
- 12.12.12: For the unbalanced circuit in Fig. 12.32, use PSpice to find the ge...
- 12.12.13: Repeat Example 12.13 for the network in Fig. 12.24 (see Practice Pr...
- 12.12.14: Let the line voltage VL = 208 V and the wattmeter readings of the b...
- 12.12.15: If the load in Fig. 12.35 is delta-connected with impedance per pha...
- 12.12.16: A balanced delta-connected load has a phase current IAC = 5 30 A. (...
- 12.12.17: A positive sequence wye-connected source where Van= 120 90 V, is co...
- 12.12.18: If Van = 220 60 V in the network of Fig.12.49, find the load phase ...
- 12.12.19: For the - circuit of Fig. 12.50, calculate the phase and line curre...
- 12.12.20: Using Fig. 12.51, design a problem to help other students better un...
- 12.12.21: Three 440-V generators form a delta-connected source that is connec...
- 12.12.22: Find the line currents IaA, IbB, and IcC in the three-phase network...
- 12.12.23: A balanced delta connected source is connected to a balanced delta ...
- 12.12.24: A balanced delta-connected source has phase voltage Vab = 880 30 V ...
- 12.12.25: In the circuit of Fig. 12.54, if Vab = 440 10, Vbc = 440 110 ,Vca =...
- 12.12.26: Using Fig. 12.55, design a problem to help other students better un...
- 12.12.27: A -connected source supplies power to a Y- connected load in a thre...
- 12.12.28: The line-to-line voltages in a Y-load have a magnitude of 880 V and...
- 12.12.29: A balanced three-phase Y- system has Van = 240 0 V rms and Z = 51 +...
- 12.12.30: In Fig. 12.56, the rms value of the line voltage is 208V. Find the ...
- 12.12.31: A balanced delta-connected load is supplied by a 60-Hz three-phase ...
- 12.12.32: A balanced delta-connected load is supplied by a 60-Hz three-phase ...
- 12.12.33: A three-phase source delivers 4.8 kVA to a wyeconnected load with a...
- 12.12.34: A balanced wye-connected load with a phase impedance of 10 j16 is c...
- 12.12.35: Three equal impedances, 60 + j30 each, are delta-connected to a 230...
- 12.12.36: A 4200-V, three-phase transmission line has an impedance of 4 + j p...
- 12.12.37: The total power measured in a three-phase system feeding a balanced...
- 12.12.38: Given the circuit in Fig. 12.57 below, find the total complex power...
- 12.12.39: Find the real power absorbed by the load in Fig. 12.58
- 12.12.40: For the three-phase circuit in Fig. 12.59, find the average power a...
- 12.12.41: A balanced delta-connected load draws 5 kW at a power factor of 0.8...
- 12.12.42: A balanced three-phase generator delivers 7.2 kW to a wye-connected...
- 12.12.43: Refer to Fig. 12.48. Obtain the complex power absorbed by the combi...
- 12.12.44: A three-phase line has an impedance of 1 + j3 per phase. The line f...
- 12.12.45: A balanced wye-connected load is connected to the generator by a ba...
- 12.12.46: A three-phase load consists of three 100- resistors that can be wye...
- 12.12.47: The following three parallel-connected three-phase loads are fed by...
- 12.12.48: A balanced, positive-sequence wye-connected source has Van = 240 0 ...
- 12.12.49: Each phase load consists of a 20- resistor and a 10- inductive reac...
- 12.12.50: A balanced three-phase source with VL = 240 V rms is supplying 8 kV...
- 12.12.51: Consider the wye-delta system shown in Fig. 12.60. Let Z1 = 100, Z2...
- 12.12.52: A four-wire wye-wye circuit has Van = 220 120, Vbn = 220 0 Vcn = 22...
- 12.12.53: Using Fig. 12.61, design a problem that will help other students be...
- 12.12.54: A balanced three-phase Y-source with VP= 880Vrms drives a Y-connect...
- 12.12.55: A three-phase supply, with the line-to-line voltage of 240 V rms, h...
- 12.12.56: Using Fig. 12.63, design a problem to help other students to better...
- 12.12.57: Determine the line currents for the three-phase circuit of Fig. 12....
- 12.12.58: Solve Prob. 12.10 using PSpice or MultiSim.
- 12.12.59: The source in Fig. 12.65 is balanced and exhibits a positive phase ...
- 12.12.60: Use PSpice or MultiSim to determine Io in the single-phase, three-w...
- 12.12.61: Given the circuit in Fig. 12.67, use PSpice or MultiSim to determin...
- 12.12.62: Using Fig. 12.68, design a problem to help other students better un...
- 12.12.63: Use PSpice or MultiSim to find currents IaA and IAC in the unbal an...
- 12.12.64: For the circuit in Fig. 12.58, use PSpice or MultiSim to find the l...
- 12.12.65: A balanced three-phase circuit is shown in Fig. 12.70 on the next p...
- 12.12.66: A three-phase, four-wire system operating with a 480-V line voltage...
- 12.12.67: As shown in Fig. 12.72, a three-phase four-wire line with a phase v...
- 12.12.68: Meter readings for a three-phase wye-connected alternator supplying...
- 12.12.69: A certain store contains three balanced three-phase loads. The thre...
- 12.12.70: The two-wattmeter method gives P1 = 1200 W and P2 = 400 W for a thr...
- 12.12.71: In Fig. 12.73, two wattmeters are properly connected to the unbalan...
- 12.12.72: If wattmeters W1 and W2 are properly connected respectively between...
- 12.12.73: For the circuit displayed in Fig. 12.74, find the wattmeter readings.
- 12.12.74: Predict the wattmeter readings for the circuit in Fig. 12.75.
- 12.12.75: A man has a body resistance of 600 . How much current flows through...
- 12.12.76: Show that the I 2R losses will be higher for a 120-V appliance than...
- 12.12.77: A three-phase generator supplied 10 kVA at a power factor of 0.85 l...
- 12.12.78: A three-phase 440-V, 51-kW, 60-kVA inductive load operates at 60 Hz...
- 12.12.79: A balanced three-phase generator has an abc phase sequence with pha...
- 12.12.80: A balanced three-phase source furnishes power to the following thre...
- 12.12.81: A professional center is supplied by a balanced three-phase source....
- 12.12.82: A balanced three-phase system has a distribution wire with impedanc...
- 12.12.83: A commercially available three-phase inductive motor operates at a ...
- 12.12.84: Figure 12.76 displays a three-phase delta-connected motor load whic...
- 12.12.85: Design a three-phase heater with suitable symmetric loads using wye...
- 12.12.86: For the single-phase three-wire system in Fig. 12.77, find currents...
- 12.12.87: Consider the single-phase three-wire system shown in Fig. 12.78. Fi...

# Solutions for Chapter 12: Three-Phase Circuits

## Full solutions for Fundamentals of Electric Circuits | 6th Edition

ISBN: 9780078028229

Solutions for Chapter 12: Three-Phase Circuits

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Fundamentals of Electric Circuits was written by and is associated to the ISBN: 9780078028229. Chapter 12: Three-Phase Circuits includes 87 full step-by-step solutions. This textbook survival guide was created for the textbook: Fundamentals of Electric Circuits, edition: 6. Since 87 problems in chapter 12: Three-Phase Circuits have been answered, more than 53046 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions.

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