7.73 To correct the power factor problems of the motorin Problem 7.72, the company has decided to installcapacitors as shown in Figure P7.73. Assume rmsvalues.a. What capacitance must be installed to achieve aunity power factor if the line frequency is 60 Hz?b. Repeat part a if the power factor is to be 0.85(lagging).50j6250jó N50j6 2Figure P7.73alleleww

The circuit diagram is, From the circuit,

Answered: 7.73 To correct the power factor…

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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Similar questions

1. Sinewave A lags sinewave B by 30°. Both have peak values of 15V. Sinewave A is the reference with a positive going crossing at 0°. Determine the instantaneous value of sinewave B at 30°, 45⁰, and 200⁰.
How do the capacitor and inductor support the circuit in power factor improvement?
5.5 kW, 1450 rpm. L-type equivalent circuit and parameters for a continuous sinusoidal phase of a star connected 3-phase ASM with line voltage 220 V and frequency 50 Hz are given as follows, ignoring core (iron) losses: R1=0.21 Ohm, R2=-0.18 Ohm, X1=X2-0.66 Ohm and Xm = 9.9 Ohm How many times the inrush current will be the rated current when the ASM is started directly? Answer options group 8.0815 2.6455 4.3763 7.1534 1.2558 6.3414 5.2280 3.7473
What is virtual synchronous Generators and their applications in Microgrid
a 6 A single phase 400W, 50 Hz Motor takes Suply current of SOA at power factor of 0. Lagging The motor power factor hall been Improved to 0.9 lagging by connecting a capacitor in parallet. Calculeite the size of capacitor
7.
• - 1800 pm In a two pole 3-p synchronous generator, the peak flux of rotor magnetic field is o5Tand the rotor rate of rotation is 1800 rpm. The stator windings have a surface area of 0.1 m? and there are 50 turns per Bmax : 0.5T, 0.5T coil. The machine is A-connected. A: 0-1 m? N: 50 a) What is the RMS phase and line voltage of the generator? b) Write the three stator phase voltages as functions of time.
Given the waveform of a voltage source shown in figure P7.8 find: a. The steady DC voltage that would cause the same heating effect across a resistance. b. The average current supplied to a 10-ohm resistor connected across the voltage source. c. The average power supplied to a 1-ohm resistor connected across the voltage source.
??
For the circuit shown in Figure 7.4, determine apparent power S, real power P, reactive power Qand power factor PF. Also, draw the power triangle. The source is 120 volts.
There are only two generators in a power system, and these generators supply a total load of 10 MW. The no-load frequencies and droop constants for the generators are 51 Hz, 0.5Hz/MW, and 52 Hz, 1Hz/MW, respectively. What is the frequency of the combined system? What are the powers produced by individual generators? At this loading condi- tion, if the generator 1 is delivered to producc equal amount of power as the generator 2, what should be the no-load frequency of the generator 1?

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