+1-415-315-9853

info@mywordsolution.com

 Algebra Math Calculus Physics Chemistry Biology Earth Science Physiology History Humanities English Sociology Nursing Science

problem: A 3-phase synchronous generator is joined to a step-up transformer T1, which is joined to a 60 km long transmission line. As the far end of line, a step-down transformer bank T2 is joined. The secondary of T2 supplies the two loads L1 and L2.
The ratings for the different parts of the system are as shown below:

Generator:               10 MVA, 12kV, X = 20%, star connected
T1:                            5 MVA, 12/69 kV, X = 10%
T2:                            5 MVA, 69/4.16 kV, X=10%
L1:                            2000 kVA at 0.8 pf lagging
L2:                            1000 kVA at 0.75 pf lagging
Transmission Line:    X = 0.5 W/km (R is negligible)

A) Draw the per-phase equivalent circuit of power system showing all the reactance in per unit and show the base voltages employed at different parts of the network by using 10 MVA and 12 kV as base quantities in the generator circuit.

B) If the voltage on load busbar should be maintained at 4.16 kV, find out the required excitation on the generator.

C) For this excitation, find out the short circuit current (in amperes) if a three-phase fault takes place on the secondary winding of transformer T2.

• Category:- Physics
• Reference No.:- M99916

Have any Question?

## Related Questions in Physics

### A homogeneously impurity doped silicon has

A homogeneously impurity doped silicon has N DD =1.01x10 16  phosphor/cm 3  and N AA  =1.00x10 14  boron/cm 3 , all of which are ionized. What are the electron and hole concentrations at 21.2°C and 362°C. Use Figure or t ...

### Consider the binary threshold neuron in k 3 dimensions and

Consider the binary threshold neuron in K = 3 dimensions, and the set of points {x} = {(1, 0, 0),(0, 1, 0),(0, 0, 1),(1, 1, 1)}. Find a parameter vector w such that the neuron memorizes the labels: (a) {t} = {1, 1, 1, 1} ...

### The height of a sand dune in centimeters is represented by

The height of a sand dune (in centimeters) is represented by f(t) = 700 - 3t 2 , where t is measured in years since 2005. Find f(5) and f'(5). Using units, explain what each means in terms of the sand dune.

### Calculate the pressure of the blood in the brain and in the

Calculate the pressure of the blood in the brain and in the feet of a pearson when standing. The average pressure of the blood in the heart is 1.3×104N/m2 above atmospheric pressure. The brain is located 0.50 mabove the ...

### 1 if the current density passing through the n-type 1

1. If the current density passing through the n-type 1 ohm-cm Si bar is increased to 10 4  A/cm 2  and 10 5  A/cm 2  (by reducing the cross-sectional area, what are the drift times for an electron across a 1 mm long Si b ...

### How does culture fit into wilsons argument about persistent

How does culture fit into Wilson's argument about persistent urban poverty? Can you draw on Patillo's Black Picket Fences that considers his argument and explain how it applies?

### A 42 m long uniform beam is supported by a cable at its

A 4.2 m long uniform beam is supported by a cable at its center. A 69 kg steelworker stands on one end of the beam, and a bucket of concrete is suspended from a point 76 cm from the beam's center, on the other side of th ...

### The saint louis arch can be approximated by using a

The Saint Louis Arch can be approximated by using a function of the form y = b - a cosh(x/a). Putting the origin on the ground in the center of the arch and the yaxis upward, find an approximate equation for the arch giv ...

### Question from nanotechnology understanding small systemsthe

Question from: Nanotechnology: Understanding Small Systems The random motion of molecules within a cell is driven by energy from heat. a. At what temperature do most cells prefer to live? b. The calorie is a unit of ener ...

### An alternating current i i0 cosomega t nbspflows down a

An alternating current I = I_0 cos(ω t)  flows down a long straight wire and returns along a coaxial conducting tube of radius a. (a) In what direction does the induced electric field point? (b) Assuming that the E-field ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro