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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In a single phase equivalent circuit, the current in the a-phase conductor line is simply the voltage generated in the a-phase winding of the generator divided by the total impedance in the a-phase of the circuit. Select one: O True O False
M:05)
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
Three single-phase transformers are connected Star-delta to step down a line voltage of 221 kV to 35 kV to supply a load of 26 MW at a lagging power factor of 0.89. Calculate the line current in the primary side, IL p. in ampers ILp
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…
a system that has all zeros and poles in the left half of s-plane represents minimum phase systems ? T F -----------------
Given at the load: Vioond = 452-25° VRMS, 452-25° VRMS, Iload What are the real and reactive power and power factor at the load? Exclude the units. real power: reactive power: power factor: Iload-10-25 ARMS what type of impedance is seen at the load? R. L. or Ch
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°
A 3-phase transmission line supplies A-connected load z as shown in figure. The negative sequence current of phase R will be R Y B 25 20⁰ 25 / 180° Z ww Z Z
A. 3-8 50kw, 4-pole, soHZ inducffon motor haß a coinding Cacy desigmed for delta connection. the coinding has 24 conducforx por Mot mranged in Go slots, the mo value * the line current is 48A. Aind the fumdomental of the mmf coane f phase -A when the cunnent is passing throyph its maximum value. what ig the speed and peak volue the resultant mmf/ pule. folne il sume otheroise &leip. Al ame incorreet dorit copy fom Qne Anscwor Another Ansawer
O e. None of these Clear my choice The three phase power and line-line ratings of the below electric power system is given below: Vm ut of M G: 50 MVA 11 KV X= 4% T: 50 MVA 11/20 KV X= 4% M: 43.2 MVA 18 KV X= 4% By choosing 100 MVA and 11 KV on the generator side as base values, the new per unit impedance of the generator is and the new perunit impedance of the motor is 4 A three-phase, 60-Hz lossless transmission line is 350 Km long. The line has a phase constant B of 0.001266825 rad/Km and a su impedance Z of 326.09 N. What is the total receiving end reactive power Qr when the sending end voltage is 230 KV and the re voltage is 219 KV and the power angle & is 15 degrees? out of
Two single-phase loads are connected in parallel, where load 1 is 4.7 kVA at 0.87 lagging power factor, and load 2 is5.2 kWat0.79lagging power factor. The load combination is connected to a voltage source of220VAC,50 Hz. a) Find the total complex power

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