ZuoTi.Pro
Question

According to the circuit in the figure, there is a balanced three-phase system with star configurations. Let Vbc = 120∠60° and a line resistance Rw = 0.5 ohms. If the total load (which also includes the line resistance) extracts kVA at a lag fp = 0.8. Decide:
a) The power lost in the line resistance
b) Van

Rw RW C Vch V n N (12+) Zp a A 2 V bn 1p Rw b B

engineering   Electrical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

3=8 Down factor given so we can find triangle impedance - TER z=Rto jx. Factor Z y due to power z =(4+13) so total load 11 Rty loss in line P,= 31, ² x Rw 3x (12582)2x0.5 PL = 246.52 w RL = b Van 120 Z 120+30 V3 120 <150 Vý Van Van = 69.28 2150

0 0
Add a comment
Know the answer?
Add Answer to:
According to the circuit in the figure, there is a balanced three-phase system with star configurations....
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • The line-to-neutral voltage at the terminals of the balanced three-phase load in the circuit shown in...

    The line-to-neutral voltage at the terminals of the balanced three-phase load in the circuit shown in A I į 480, kVAI 1 08 pf Q Tap image to zoom is 1900 V.At this voltage, the load is absorbing 480 kVA at 0.8 pf lag Part A Use VAN as the reference and express Ina in polar form. Enter your answer using polar notation. Express argument in degrees. Submit Request Answer Part B Calculate the complex power associated with the ideal...

  • A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel...

    A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel connected loads: • Load 1 absorbs a total of 125 kW and 100 KVAR • Load 2 is a delta-connected impedance load with (125+j 40)ohms/phase • Load 3 absorbs 120 kVA at 0.8 power factor (lagging) Given that the line-neutral voltage at the load end of the line is 2400 V, determine the magnitude of the line-to- line voltage at the source end of...

  • Problem 3: The line-to-neutral voltage at the terminals of the balanced three-phase load in the circuit...

    Problem 3: The line-to-neutral voltage at the terminals of the balanced three-phase load in the circuit shown in Fig. 3 is 1200V. At this voltage, the load is absorbing 500kVA at 0.96 pf lag. a) Use Van as the reference and express Ina in the polar form. b) Calculate the complex power associated with the ideal three-phase source. c) Check that the total average power delivered equals the total average power absorbed. d) Check that the total magnetizing reactive power...

  • 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...

  • Problem #2 (60 pts). A balanced three-phase 240-V (rms, line-to-line source supplies a balanced three-phase load....

    Problem #2 (60 pts). A balanced three-phase 240-V (rms, line-to-line source supplies a balanced three-phase load. If the line current IA is measured to be 15 A and is in phase with the line-to-line voltage, VBc, find the per-phase load impedance if the load is (a) Y-connected (b) A-connected. Calculate the complex ower S for each case.

  • 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...

  • SOLVE: In a factory there is a three-phase transformer with the following characteristics: -S = 100...

    SOLVE: In a factory there is a three-phase transformer with the following characteristics: -S = 100 kVA, 22 / 12.7 kV - D-Y - Resistance of 0.15 pu and a reactance of 0.6 pu. -Ram of excitation Rm = 100 pu and Xm = 20 pu. a) If this transformer supplies an 80 kVA load with an FP = 0.8 lag, draw the phasor diagram of one phase of the transformer. b) What is the regulation of the transformer bank...

  • Please show all work Problem #2 For the three-phase balanced system shown in the figure determine...

    Please show all work Problem #2 For the three-phase balanced system shown in the figure determine the following: 1. V and I 2. The three-phase power absorbed by the load. 3. The real and reactive three-phase powers lost in the transmission line. Р 4. The power efficiency, N =- -Load *100. of the three-phase system. Source V = 100 20° V. a 112 j122 A + ommo 15+ j2102 D=1002-120V.. 12 122 B 15+j2102 15+ j2 152 D =100420 V...

  • 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 60 Hz, balanced three-phase source is connected to a balanced load of 2815 kVA at...

    A 60 Hz, balanced three-phase source is connected to a balanced load of 2815 kVA at 0.95 pf lagging through a short transmission line with negligible resistance and a series inductive reactance of 13 12. The load is operated at 25 kV. Compute: (a) the line current magnitude (b) the line voltage magnitude at the source (c) the line-to-neutral source voltage (d) the power factor of the source

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT