I- Purely Inductive Load1. Sketch a three-phase 100VAC RMS phase-voltage, Wye (Y) Connected power supply with aWye (Y) Connected load with purely inductive j3002 per phase.2. Assume the phase-voltage of phase-A at the source side has an angle of zero. Calculate bothmagnitudes and phase-angles for phase voltage, line voltage, phase current, and line currentat the load side. Also, compute load real power, apparent Power, and power factor.Ve V VLine_V l A ILine.V.A. P.F.(lagging or leading)

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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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A synchronous generator has been synchronized to an infinite grid of 13.8 kV and 60 Hz. The generator prime mover C/C is such that the no-load frequency is 62.5 Hz and the power slope is 1 MW/Hz. The AVR C/C (The reactive power against the terminal voltage C/C) is such that the zero reactive power voltage is 14.6 kV, while the slope is 0.4 MVAR/kV. Calculate: (a) the kVA loading of the generator and its power factor. (b) the settings of the prime mover and AVR such that the generator delivers 3 MW at 0.85 lagging power factor.
2. A single-phase are distributor AB is fed from end A and has a total impedance of (0.3-0.3) ohm. At the far end, the voltage V-240V and the current is 100A at a p.f. of 0, 8 lagging. At the mid-point M. a current of 100 A is tapped at a p... of 0.6 lagging with reference to the voltage V_{M} at the midi-point. Calculate the supply voltage V Lambda j sending current I_{N} and the phase angle between V_{A} and V_{E}
No-load operation and short circuit tests were performed on three-phase, 50 Hz 480/220 delta / Y connected transformer. In these testsThe line voltage, line current and three-phase total power have been measured from the high voltage windings and the test results are below.pictures. 100 A DC current when 1.08 V DC voltage from non-transferable software is applied to the low voltage windingshas attracted.Find the single phase equivalent circuit parameters of this transformer.idle test:Voltage: 480V Power:114w current: 0.71Ashort circiut test:V: 10v P: 78w c: 18.3a
In a given system of base power of 250 MW, and bus 3 is taken as reference. The per-unit reactances are X₁2 = 0.2 p.u., X13 = X23 = 0.1 p.u. If the power flow in the system is given as: PF12 = 100 MW, PF13 = 50 MW, PF23 = -150 MW, then the phase angles are Select one: O a. 0₁ = 0.02 rad., 0₂ = 0.06 rad., 03 = 0 rad. O b. None of these O c. 8₁ = 0.02 rad., 02 = -0.06 rad., 03= 0.1 rad. O d. 0₁ = 0.02 rad., 02 = -0.06 rad., 03 = 0.2 rad. O e. 8₁ = 0.02 rad., 8₂ = -0.06 rad., 03 = 0.1 rad. O f. 0₁ = 0.02 rad., 02 = -0.06 rad., 03 = 0 rad.
The steady-state voltage drop between the load and the sending end of the line seen in (Figure 1) is excessive Suppose that V-4950/0° V (rms). A capacitor is placed in parallel with the 192 kVA load and is adjusted until the steady-state voltage at the sending end of the line has the same magnitude as the voltage at the load end, that is, 4950 V (rms). The 192 kVA load is operating at a power factor of 0.8 lag. Part A Calculate the size of the capacitor in microfarads if the circuit is operating at 60 Hz. In selecting the capacitance, use the value that results in the lowest possible power loss in the line. Express your answer in microfarads to three significant figures. ▸ View Available Hint(s) Figure 1 of 1 202 1100 192 kVA 0.8 lag ΜΕ ΑΣΦ. 11 vec C= 22.8 Submit Previous Answers Incorrect; Try Again; 5 attempts remaining Provide Feedback ? F
Construct the circuit in Figure 1 in the Circuit JS simulator. Note that the voltage source is given in RMS. Within Circuit JS while defining the max voltage of the voltage source include “rms” after the number to tell Circuit JS that this is a rms value. Also note that there are additional parameters when instantiating a transformer in Circuit JS. Leave these at the default values. Additionally, transformers may have problems simulating in Circuit JS. Answer the following: 1. From the simulation results, determine the power dissipated in R2 and compare to the expected value from the previous section.2. Change the transformer ratio (“Ratio” as a fraction when you “Edit…” the transformer component) to the value calculated in the previous section to provide maximum power transfer in R2. Note: In Circuit JS, Transformer Ratio = Primary/Secondary.3. Rerun the simulation, calculate the power dissipated in R2 and compare to the expected value from the previous section.4. Change the…
Two single-phase transformers, having equal turns ratio, in parallel supply a secondary load of 1,000 A at 0.8 pf lagging. For each transformer the secondary emf on open circuit is 3,300 V and their total leakage impedances referred to secondary are (0.10 + j0.20) ohms and (0.05 + j0.040) ohm, respectively. Determine the output current on each transformer.
3. A circuit consists of two impedances. Z1 =20230° and Z2 =25260° 2, in parallel, supplied by a source voltage V=1002600 volts. Determine the power triangle for each of the impedances and for the source.
A three-phase transmission line and a telephone line are supported on the same towers a shown in the figure. The power line carries a 60-Hz balanced current of 200-A per phase . the telephone line is located directly below phase b. assuming balanced three-phase currents in the power line, find the voltage per kilometer induced in the telephone line. 3.6 m 3.6 m Dal Da2 Del De 4 m 11.2 m-
In power distribution systems, what is sometimes necessary to install to reduce harmonic frequencies and distortion between the three-phase transformers and distribution panels?

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