A balanced wye-delta system is shown in below figure. Line impedance,%3D%3Dper phase Load impedance and generator voltage are Z, = 3434'N, ZA =302-25°N and Van = 220210'V RMS, respectively. For ABC phasesequence, determine the line currents.334° 2I AaVanI ca220|10" V^ZA IbcI BhVhn334 2334' 2

Given circuit is = Given values are =

Answered: A balanced wye-delta system is shown in…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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18. A 415 V, 50 Hz, 3-phase supply of phase sequence RYB is connected to a delta connected load in which branch RY consists of R, = 100. branch YB conists of R₂ = 20 2 in series with X₂ = 60 Q and branch BR consists of a capacitor C= 30 uF. Take Vy as the reference and calculate the line currents. Draw the complete phasor diagrams. (Elect. Machines, A.M.I.E. Sec. B. 1989) 14.54, 1, 10.66 2172,92, 14.46 2-471 (1 = 7.78
Circuit theory. Y-connected balanced three-phase generator with an impedance of Zs =0.4+j0.3 ohm per phase is connected to a Y-connected balanced load with an impedance of ZL=14+j31 ohm per phase. The line joining the generator and the load has an impedance of Zl=0.6+j0.7 ohm per phase. Assuming a positive sequence for the source voltages and that amplitude of |Van|=188 and its phase angle 30 degree Find: (a) amplitude of the line voltage Vbc, (b) amplitude of the line current Ic, (c) the complex power at the balanced three-phase load. a. (a) Vb=325.63 V, (b) Ic=5.32 A, (c) S = 84006.67 + j 989.44 VA b. (a) Vb=265.87 V, (b) Ic=3.07 A, (c) S = 14001.11 + j 285.63 VA c. (a) Vb=325.63 V, (b) Ic=5.32 A, (c) S = 9508.07 + j 21053.59 VA d. (a) Vb=265.87 V, (b) Ic=5.32 A, (c) S = 3565.53 + j 7895.10 VA e. (a) Vb=325.63 V, (b) Ic=7.98 A, (c) S = 42003.33 + j 742.08 VA f. (a) Vb=325.63 V, (b) Ic=6.38 A, (c) S = 4754.04 + j 10526.80 VA g. (a) Vb=325.63 V, (b) Ic=5.32…
In a balanced tephasic system Y - Delta of the figure. Find the line current IL and the average and supplied power to the load
Two three-generator are parallel at 6.6 kV and delivering 3000 kW at 0.8 pf. The impedance for machine A is 0.5+j10 ohm and for B 0.4+j12 ohm. The excitation of A is adjusted to deliver 150 A at lagging pf. Determine the induced emf of machine A.
a system that has all zeros and poles in the left half of s-plane represents minimum phase systems ? T F -----------------
A 15-Kv, 35-KVA O.76P.flagging SOHZ Four-Pole Y-connected Stecim - turbine generatov has a synchronous reactane of 3.50r perphase and an armatnre resi stenue of 0:75r Per Phase Ihis generat is operating in parallel with large fower Systemm C Infinite bus) What is the magnitude of fA at rated to nditiun- 5IF He field Cumeit is constaut, Whet is the Max in um power possible out of this How much reserve power or tougue does this genevatou have at full load? What is te gen-eratur; tovque angle at rated candition. genevatr? O Sketch He covrespouding ghasor diagrem aud calcu. for the armatune cumert Cassume Hhe freld cument is sti une hauged) · OAt te alsolute fower posible, how much reactive prwer uwill this generatuv be Supplying or consuming ?
Phase Qz/ The eas Voltages at the terminal of abalan ced Y connected load is VAN=12o 28. Each Phase of the load consist of lo 230° .Find the active & Reactive and Complex Power Per-Phase then find the total Powers For three Phase load.
Find out the zero-phase sequence components of the following set of three unbalanced voltage vectors: Va =10cis30° ,Vb= 30cis-60°, Vc=15cis145°" (THOS PROBLEM IS MULTIPLE CHOICE PLEASEE CHOOSE THE LETTER WITH THE CORRECT ANSWER AND PLEASE PROVIDE YOUR CLEAR SOLUTION! A 16.809cis-72.579° B 5.603cis72.579° C 16.809cis-47.421° D 5.603cis-47.421°
Suppose you have a three-phase generator that provides 120 Vac per phase and works at a frequency of 60 Hz, this generator can be connected in both delta and star. Also consider the following 6 load impedances, which will be connected at the same time to the generator as follows: ZA, ZB and Zc are connected in star, while Zp, Zg and Zp are connected in delta. j20 j3n Za j20 ZA j30 j3n -j20 j 30 -j20 Zo -j20 ZE j30 -j2n j 3n. ZF Assume the generator is star-connected with neutral, calculate total system power, total power factor, and current in neutral.
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For a three-phase positive sequence ΔΔ-connected system, Vab=3.6∠56.0Vab=3.6∠56.0. Then VbnVbn is:
20) Two AC generators A and B are in Parallel. Each generator has an emf of 1000V per phase and in phase, the phase impedance are ZA = 0.1+j2 ohms, ZB = 0.2+j3.2 ohms respectively. If the common load has an impedance of (2+j1) ohms per phase, solve the voltage per phase at the load

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