Determin the total line current drawn from the supply

Assignment Help Electrical Engineering
Reference no: EM13265457

A 415V 50 Hz three phase supply has been divided into three balanced loads, as follows:

LOAD 1 (STAR): 15 kVA at a power factor of 0.60 lagging;
LOAD 2 (DELTA): 24 kW at a power factor of 0.55 lagging;
LOAD 3 (DELTA): ZRW = ZWB = ZBR = Unknown impedance, but components are known to be balanced.

The system draws a total apparent power of 44kVA at a power factor of 0.82 lagging from the supply.

Determine:

(i) the STAR capacitance required to correct the overall supply Power Factor to 0.87 lagging.
(ii) The total line current drawn from the supply before power factor correction and after.

Reference no: EM13265457

Questions Cloud

Some of linear regression in forecasting future conditions : Most businesses use some form of linear regression in forecasting future conditions. Give an example of the use of regression analysis at your organization. What were the independent and dependent variables?
Calculate the scale reading compared with his weight : A 75.0 kg man stands on a bathroom scale in an elevator that accelerates upwards from rest to 30.0 m/s in 2.00 s. Calculate the scale reading compared with his weight
Determine the magnification of the mirror : A virtual image is formed 21.0 cm from a concave mirror having a radius of curvature of 34.5 cm. What is the magnification of the mirror
Determine how much you must deposit today : Determine how much you must deposit today, January 1, to be able to withdraw $100 on July 1, August 1, September 1, and October 1. Assume that the interest rate is 24% per year compounded monthly.
Determin the total line current drawn from the supply : A 415V 50 Hz three phase supply has been divided into three balanced loads, as follows: LOAD 1 (STAR): 15 kVA at a power factor of 0.60 lagging; LOAD 2 (DELTA): 24 kW at a power factor of 0.55 lagging;
What does the debt-equity ratio need to be : The tax rate is 34 percent. What does the debt-equity ratio need to be for the firm to achieve its target WACC?
Find the maximum kinetic energy of the ejected photoelectron : In a photoelectric effect experiment, visible radiation of energy 2.91 eV is incident upon a metal of work function 1.66 eV. find the maximum kinetic energy of the ejected photoelectrons
Determine the magnification of the lens : An object is placed 53.0 cm from a screen. Find the magnification of the lensmagnification if placed at the shorter distance magnification if placed at the farther distance
Find secondary current and operating pf of each transformer : Two parallel connected 10 kV to 120 V 60 Hz single phase transformers supply a varying load. When the total secondary load current is 250 A at 0.85 PF lagging, determine the secondary current and operating PF of each transformer.

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Define cellular operator designs a network reuse pattern

TDMA has 416 frequencies in one of the cellular license bands. If a cellular operator designs a network with a 5/15 reuse pattern, how many frequencies per cell (sector) can be supported? ( ignore control channels)

  Find the radius of equipotential surfaces having potentials

A very long cylinder of radius 2.00 cm carries a uniform charge density of 1.50 nC/m. Taking the reference level for the zero of potential to be the surface of the cylinder, find the radius of equipotential surfaces having potentials of 10.0V, 20...

  How many grams of carbon dioxide are produced

When the body metabolizes glucose water and carbon dioxide are produced according to the following equation. C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O If 0 g of glucose are metabolized with excess oxygen

  Write an expression for i1 of the form of imaginary part

We have v1(t)=10cos(wt+30degrees). The current i1(t) has an rms value of 5A and leads v1(t) by 20s. (The current and the voltage have the same frequency) Draw a phasor diagram showing the phasors.

  How much the meter movement has a series resistance

A meter movement has a series resistance of 10-ohm and a full scale current of 100mA. Use this meter movement to design a 10A full scale ammeter. Be sure to show a schematic of your design.

  How many meters will the voltage drop by 30 db

A telephone line has the following parameters: R = 40 W/m, G = 400 mS/m, L = 0.2 mH/m, C = 0.5 nF/m. (a) If the line operates at 10 MHz, calculate the characteristic impedance Zo and velocity u,

  Construct required circuit with min number of unit transistr

Assuming that only integer multiples of a unit bipolar transistor having IS = 3 x 10-16A can be placed in parallel, and only a single voltage source, VB, is available (Fig. 4.54), construct the required circuit with minimum number of unit transist..

  Specify the functions realized by each function generator

a. Tablulate the truth table for an 8x4 ROM that implements these Boolean functions. b. Tabulate the PLA programming table for these functions. Minimuze the number of product terms. c. Implement this circuit using a PAL with 3 inputs, 4 outputs and 3..

  Describe time-domain sequences for unity-amplitude

Recall that for discrete sequences the ts sample period (the time period between samples) is the reciprocal of the sample frequency fs. Write the equations, describing time-domain sequences for unity-amplitude cosine waves

  Which is the correct syntax for the concurrent signal

The detector will take in numbers from 1510 to 010 encoded in binary labeled [N3:N0] with N3 being the most significant bit. The output will be asserted when the decimal value of the input is a prime number (i.e., 2,3,5,7,11,13). The output is de-..

  Explain the signal transmitted by a base station

The signal transmitted by a Base Station has a power of 1 mW at a distance of 1 m from the transmitter. Measurements have shown that the propagation exponent for the path loss is n=3 up to a distance of 1 km and n=4 beyond that.

  Develop the pseudo-code

Develop the pseudo-code below for a program that will retrieve 2 bytes (NUM1 and NUM2) from memory, determine which is closest to the numeric value 50, and indicate the result by setting a variable named "CLOSEST" to 1 (if 1st byte is closest) or ..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd