(a) Based on the relationship between the line and phase value of currents and voltage, show that the active power input to a three-phase balance load is V3VIcosø, where V and I are line quantities. (b) A balanced Y-connected load has phase voltage of 230 V and positive phase sequence. The impedances Za, Zs, and Zc are 10230° N, respectively. (i) By taking Vas on the load side as a reference, determine all the line currents and phase voltages and line voltages. (ii) Determine total real power, P, total reactive power, Q and total apparent power, S of the system. (iii) Total real power of the loads can be measured using two wattmeter methods. Draw the connection of the two wattmeters if their current coils are in line A and C, respectively. What is the total real power measured by each wattmeter? Prove and compare the value with Q2(b)(i11).

(a) Based on the relationship between the line and phase value of currents and voltage, show that the active power input to a three-phase balance load is V3VIcosø, where V and I are line quantities. (b) A balanced Y-connected load has phase voltage of 230 V and positive phase sequence. The impedances Za, Zs, and Zc are 10230° N, respectively. (i) By taking Vas on the load side as a reference, determine all the line currents and phase voltages and line voltages. (ii) Determine total real power, P, total reactive power, Q and total apparent power, S of the system. (iii) Total real power of the loads can be measured using two wattmeter methods. Draw the connection of the two wattmeters if their current coils are in line A and C, respectively. What is the total real power measured by each wattmeter? Prove and compare the value with Q2(b)(i11).

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...

See similar textbooks

Similar questions

Solve part c.
The sensitivity of a node to real power changes is 100 MW/kV of line voltage and that to reactive power changes is 10 MVAr/kV of line voltage. (v) How much reactive compensation would have to be introduced at a point to maintain the voltage constant for a real power change of 55MW?
please do this one too. your answers are very clear and easy to follow!
Q2
(c) In the Y-A system shown in Figure Q2(c), the source is a positive sequence with VRN = 24020° V and phase impedance, Zp = (2 – j3) N. Determine; VRN R Zp VYN Y N Zp ZP VBN B Figure Q2(c) (i) All line voltages, VRY, VYB, and VBr-. (ii) All line currents, IR, Iy and Ig. (iii) Total real power absorbs by the loads.
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
A single phase, unity power factor load takes 90 Amps at 10 kV. Using a base voltage of 65 kV and base kilovolt amperes of 4475 kVA. Find the base current, base impedance, base power, per unit current and per unit voltage of the load.
2. A single-phase a.c. distributor AB is fed from end A and has a total impedance of (0-2 + j 03) ohm. At the far end, the voltage V = 240 V and the current is 100 A at a p.f. of 0-8 lagging. At the mid-point M, a current of 100 A is tapped at a p.f. of 0-6 lagging with reference to the voltage Vy at the mid-point. Calculate the supply voltage V, and phase angle between V, and Vg- [292 V, 2-6°] a loade
Please Answer My Questions in 30 minutes i'm very needed... Please thank u...
Please I need the answer as soon as possible please
A three-phase feeder supplies two loads A and B at 380 V (Figure 2).Find the impedance of load A of (55 + j89) ohms and that of load B of(90 + j66) ohms. Ordered as currents in phases A that feed the twoloads, and as currents in the delta connected load.
i need the answer quickly