# Register now to access 7 million high quality study materials (What's Course Hero?) Course Hero is the premier provider of high quality online educational resources. With millions of study documents, online tutors, digital flashcards and free courseware, Course Hero is helping students learn more efficiently and effectively. Whether you're interested in exploring new subjects or mastering key topics for your next exam, Course Hero has the tools you need to achieve your goals.

2 Pages

### Tutorial_5204_09_03_09

Course: ELEC 5204, Fall 2009
School: Allan Hancock College
Rating:

Word Count: 284

#### Document Preview

Electrical ELEC5204 Power Systems - Tutorial Questions 9/3/09 1) The operator a = 1 120. Find the values of the following expressions as phasors in polar form (i.e. as complex quantities with magnitudes and phase angles). a) b) c) d) a 3 2 2 a+a aa 1+a+a 2 2) The sequence currents into an unbalanced fault are (in pu on 100 MVA): I0 = 4.0 +90 pu , I1 = 10.0 -90 pu, and I2 = 6.0 +90 pu Find the values of the...

Register Now

#### Unformatted Document Excerpt

Coursehero >> California >> Allan Hancock College >> ELEC 5204

Course Hero has millions of student submitted documents similar to the one
below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.

Course Hero has millions of student submitted documents similar to the one below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.
Electrical ELEC5204 Power Systems - Tutorial Questions 9/3/09 1) The operator a = 1 120. Find the values of the following expressions as phasors in polar form (i.e. as complex quantities with magnitudes and phase angles). a) b) c) d) a 3 2 2 a+a aa 1+a+a 2 2) The sequence currents into an unbalanced fault are (in pu on 100 MVA): I0 = 4.0 +90 pu , I1 = 10.0 -90 pu, and I2 = 6.0 +90 pu Find the values of the phase currents Ia , Ib and Ic (again as phasors with magnitudes and phase angles) that flow into the unbalanced fault. 3) A solid phase-to-earth fault occurs on a-phase at location F, making Va = 0 where: The positive-sequence and negative-sequence source impedances are both equal to Z1; The zero-sequence source impedance is Z0; and The pre-fault (positive-sequence) voltage magnitude is 1 0 per unit a) For this i) case: Draw the Thevenin equivalent of each of the three sequence networks at location F; Show the connections between the three Thevenin equivalents to simulate a solid a-phase-to-earth fault at location F; Apply Ohms Law to your circuit to write down the expression for the sequence currents (I1, I2, I0) drawn from the fault point F (for this a-phase-to-earth fault they are all equal) in terms of Z1 and Z0; ii) iii) iv) Apply Ohms Law to your circuit to find expressions for the sequence volt...

Find millions of documents on Course Hero - Study Guides, Lecture Notes, Reference Materials, Practice Exams and more. Course Hero has millions of course specific materials providing students with the best way to expand their education.

Below is a small sample set of documents:

Allan Hancock College - ELEC - 5204
ELEC5204 Electrical Power Systems - Tutorial Questions 23/3/091) The following single-line diagram shows part of the 132kV network that supplies a two-transformer 132/33kV substation. Transformer B Equivalent 132 kV Source Line X A Y Y 33kV~Y Li
Allan Hancock College - ELEC - 5204
Notes for ELEC5204 Electrical Power Systems Lecture 2/3/091. IntroductionMy name is Don Geddey and my email address is: don.geddey@transgrid.com.au I work as an electrical engineer in the System Planning and Analysis Group of TransGrid, which is th
Wisconsin - GEOG - 970
Environment and Planning B: Planning and Design 2001, volume 28, pages 545 ^ 562Space, time, and dynamics modeling in historical GIS databases: a fuzzy logic approachSuzana DragicevicDepartment of Geography, McGill University, 805 Sherbrooke Str
LSU - ETD - 03252009
TASK SCHEDULING AND PLACEMENT FOR RECONFIGURABLE DEVICESA Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor o
UCCS - CS - 591
Overview ofJoe B. Taylor CS 591 Fall 2008Introduction Thriving defense manufacturing firm System administrator angered His role diminished with network he 12/8/08created Intimidates co-worker, obtains only backup tapes Terminated for a
UC Davis - LOG - 0902
Emergency Medicine Research Associate ProgramInstructions:For PC and MAC users: Please use Microsoft Word to fill out the electronic application. Once completed, please savethe application as Last Name, First Name, Spring 2009 (ex. Appleseed, Jo
UCCS - CS - 591
NIST Special Publication on Intrusion Detection SystemsIntrusion Detection SystemsRebecca Bace1 and Peter Mell21 2Infidel, Inc., Scotts Valley, CA National Institute of Standards and TechnologyPage 1 of 51NIST Special Publication on Intrus
UCCS - CS - 591
Rule: -Sid: 3109- Summary: This event is generated when an attempt is made to exploit a knownvulnerability in Microsoft License Logging Service.- Impact: Serious. Execution of arbitrary code leading to unauthorizedadministrative access
Wisconsin - ECE - 376
Cell Voltage and Stack Power vs. Current DensityNatural Gas (H2O : CH4 = 2.0) 1000C Operating Temperature 79% Fuel Utilization (with anode gas recirc) 78 m Stack Cell Area 900 800 250 700 Voltage 3002Vcell (mV)600 500 400 300 200 100 0 0max p
Wisconsin - ECE - 376
Wisconsin - ECE - 376
Wisconsin - ECE - 376
Allan Hancock College - CIVL - 2201
School of Civil Engineering Structural MechanicsFormative Problem Set 3 Internal Actions - Solution This set of problems should be completed during the lecture/tutorial session in which it was distributed. While no marks are assigned to the complet
Wisconsin - ECE - 376
Exam 2Exam is 8 problems on 2 sides of 2 sheets of paper - scratch paper provided but only answers or work on exam papers to be graded.PP is Practice Problem in Hayt Kemmerly Durbin book.HW is homework problem from same.Exam will have 8 pro
UCCS - CS - 522
Security-Enhanced LinuxJoseph A LaConte CS 522 December 8, 2004Overview Background Overview and Goals Previous Projects Why Linux SELinux Overview MAC versus DAC Security Policy Implementations Type Enforcement Role-Based Access Control
UCCS - CS - 522
Multipath RoutingCS 522 F2003 Beaux SharifiAgenda Description of Multipath Routing Necessity of Multipath Routing 3 Major Components Necessary for Multipath Routing Example Multipath Routing Model Simulation ResultsWhat is Multipath Routing
UCCS - CS - 522
Computer Science 522 Computer CommunicationIEEE 802.11: The Wireless LAN Standard by Brian RobertsDecember 10, 20001.0 Introduction A wireless LAN (WLAN) is a data transmission system designed to provide locationindependent network access betwe
UCCS - CS - 522
Content Based Switching Techniques4/26/2009iContent Based Switching Techniques4/26/2009A Study on Content based SwitchingBy Baba Anem Ganesh Kumar Sudhakar Kasireddy Date : 12/07/2000CS522 - Computer Communications Dr. Edward Chowii
LSU - DC - 43733
.January 20082008 Area 4-H Commodity Cookery ContestTensas Parish 4-H Commodity Cookery Contest winners will be testing their cooking skills in the area contest. The area contest will be held January 30th, 2008 at Ag Adventures in Delhi. Those to
Frostburg - MCOM - 150
MCOM 150 Introduction to Radio Grade SheetAssignment/Exam Mid- Semester Exam. Paper Assignment. . Paper Presentation.. . Case Study. . Demo Tape Assignment. . Group Presentation.. . Final Exam. . SubTotal. . GradeAttendance (+25 for perfect atten
Frostburg - MCOM - 150
MCOM 150 Case Study GuidelinesA case study involves making a decision about a simulated problem. Your written report should be 3-5 pages long, typed and double-spaced. Include the following sections to summarize the case study and justify your decis
Wisconsin - ECE - 220
HW1 9013382479 9017097735 9022298294 9025030330 9026243312 9026373960 9026467192 9026603192 9026727074 9026727223 9026744590 9026744996 9026753328 9026757436 9026758012 9026865049 9026869702 9026911603 9026915190 9028033760 9028046077 9028197565 9028
Wisconsin - ECE - 220
Applications of electromagnetic fields in biomedical engineering. John Webster. Webster@engr.wisc.edu (Spring 1999) 1 In 1932 the invention of electrosurgery permitted surgery on vascular organs because it cuts and coagulates. 500 W, 1 A, at 500 kHz.
Wisconsin - ECE - 220
Expectation for Student Participation in the Classroom It is a proven fact that humans remember far more of what they are required to describe to a listener than what they just simply hear from an instructor. Consequently, my preferred teaching style
Wisconsin - ECE - 733
ECE 733. Computational Methods for Large Scale Systems Project ReportDemetz, Clment Department of Electrical and Computer Engineering University of Wisconsin, MadisonIterative methods for eigenvalue problems involving sparsityAbstractIn many pr
UCCS - CS - 591
Rule:-Sid:12225-Summary:This event is generated when activity relating to the spyware application &quot;zango2007 toolbar&quot; is detected.-Impact:Unkown. Possible information disclosure, violation of privacy, possible violation of policy.-Deta
UCCS - CS - 591
Rule:-Sid:8537-Summary:This event is generated when an attempt is made to exploit a known vulnerability in Microsoft systems using Microsoft SQL Server.-Impact:Serious. Denial of Service. Code execution may be possible.-Detailed Inform
UCCS - CS - 591
UCCS - CS - 591
Rule:-Sid:7883-Summary:This event is generated when an attempt is made to return to a web client a file with a Class ID (CLSID) embedded in the file.-Impact:A successful attack may result in the execution of code of the attackers choosing
UCCS - CS - 591
Rule:-Sid:7084-Summary:This event is generated when activity relating to the &quot;erazer v1.1&quot; Trojan Horse program is detected.-Impact:Possible theft of data and control of the targeted machine leading to a compromise of all resources the ma
UCCS - CS - 591
Rule:-Sid:7291-Summary:This event is generated when an attempt is made to exploit a known vulnerability in Microsoft systems using the Microsoft Windows Server Service. In particular this rule generates an event when an attempt is made to exp
UCCS - CS - 591
Rule:-Sid:1754-Summary:This event is generated when an attempt is made to access the as_web4.exe component associated with the askSam Web Publisher software.-Impact:Cross-site scripting. This may allow execution of arbitrary commands on
BYU - DEG - 137
0 -&gt; -o1 -&gt; /raid/htdocs/deg/demos/live_demo/demo/default_data/defaultontsrc/jobs.osml2 -&gt; -p3 -&gt; /raid/htdocs/deg/demos/live_demo/user_data/deg137_111_13_36/test/4 -&gt; -n5 -&gt; 10006 -&gt; -r7 -&gt; /raid/htdocs/deg/demos/live_demo/ontology/ontology8
Wisconsin - BOTANY - 422
Phylogeography Historical Biogeography of the SpeciesPhylogeography Historical Biogeography of the SpeciesDue to advances in DNA sequencing and fingerprinting methods, historical biogeography has recently begun to integrate relationships of pop
Wisconsin - BOTANY - 422
Relationships of Floras (&amp; Faunas)Knowledge of earth and organism histories now permit closer examination of relationships of disjunct floras and faunas.Will examine four important examples of floristic relationships (Southern Hemisphere temperate,
UCCS - MATH - 448
&gt; #3.6. Reconsider the facility location problem, &gt; # but assume the response time from (x0,y0) to (x1,y1) is proportional to &gt; # |x1-x0| + |y1-y0|. &gt; # a) Find the optimal location. &gt; restart; &gt; f := (6*(abs(x-1)+abs(y-5) + 8*(abs(x-3)+abs(y-5) + 8*
UCCS - MATH - 448
Test 1Math 448/548Professor CarlsonShow all your work 1. (a) (10 pts) Find the minimum of the function f (x, y) = 2x2 - 2xy + y 2 - 4x + 4. (You may assume the minimum exists.) (b) (15pts) Use Lagrange multipliers to maximize and minimize the f
UCCS - MATH - 135
3 gt&quot; g u &quot; g g\$ d &quot; g v g 1 g d &quot; g 3&quot; h H!2%su&amp;!Russ23rs23nbu2&quot;x2t&amp;Hush2\$%s}ta \$&quot; 1 g d &quot; g 3&quot; h 5xhy&quot;%2t5Hrsh2\$%sTIa ` &quot; g gt 1&quot; &quot; u g h )b2&amp;wlxn2xrsls23epa o d h DY g j 5Ia u&quot; gt\$&quot; u g &quot; g 1 g d 3 g g\$ d &quot; h\$ g d a ` q
UCCS - MATH - 448
&gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt;#2. Consider the pig problem of example 1.1, but # suppose the weight is # w(t) = 800/(1 + 3exp(-t/30). # a) At time t=0 the rate of change for weight is # w(0) = 5. For later times the derivative # is still positive but larger, #
UCCS - MATH - 448
&gt; # Consider the effect of modified quotas on the whale populations. &gt; # Let's plot the population growth rates with these quotas. &gt; r1:=0.05; k1:=150000;a1:=1e-8; r1 := .05 k1 := 150000 a1 := .1 10-7 &gt; dx := r1*x*(1-x/k1)-a1*x*200000 - q1; 1 dx :=
UCCS - MATH - 448
&gt; # 5. The TV plant is located outside the US. The government imposes at \$25 tariff. &gt; # a) Find optimal production levels. How much does the tariff cost the company in direct payments and lost sales? &gt; restart; &gt; p := (339 - .01*x -.003*y)*x + (399
UCCS - MATH - 448
&gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt;# 6. Pc's are selling 10,000 per month. # Cost of manufacturing is \$700/unit, price is # \$950/unit. A price drop of \$100 leads to a 50 percent # increase in sales. # Advertising currently costs \$50,000/month. # Every extra \$10,
UCCS - MATH - 448
&gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt;# 3d) Assume a_1 = a_2. Study population sensitivities # to a_1. Look for extinctions. restart; f:= r_1*x*(1-x/k_1) - a_1*x*y: g:= r_2*y*(1-y/k_2) - a_1*x*y: k_1 := 150000: k_2 := 400000: r_1 := 0.05: r_2 := 0.08:
UCCS - MATH - 448
&gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt;# 1b) Examine the sensitivity to r_1,r_2 restart; f:= r_1*x*(1-x/k_1) - a_1*x*y: g:= r_2*y*(1-y/k_2) - a_2*x*y: k_1 := 150000: k_2 := 400000: a_1:=1e-8: a_2 := 1e-8: h:= diff(f+g,x): h2:= diff(f+g,y): # Define a set o
UCCS - MATH - 448
&gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt;# Math 448/548 Prof. Carlson Hwk 2 # # 1. Whale population model: # x' = r_1*x*(1-x/k_1) - a_1*x*y # y' = r_2*y*(1-y/k_2) - a_2*x*y # Parameter values: # Blue whale Fin whale # r 0.05 0.08 # K 150,000 400,000 # a 1e-8 1
UCCS - MATH - 448
&gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt; &gt;#1. Consider the pig problem of example 1.1, but # suppose the price is # p(t) = 0.65exp(-.01t/.065). # a) At time t=0 the rate of change for price is # p(0) = -.01. For later times the derivative # is still negative, but the
UCCS - CS - 526
This is ApacheBench, Version 2.0.40-dev &lt;\$Revision: 1.146 \$&gt; apache-2.0Copyright 1996 Adam Twiss, Zeus Technology Ltd, http:/www.zeustech.net/Copyright 2006 The Apache Software Foundation, http:/www.apache.org/Benchmarking windom.uccs.edu (be pat
Wisconsin - STAT - 992
Wisconsin - STAT - 992
UCCS - CS - 526
This is ApacheBench, Version 2.0.40-dev &lt;\$Revision: 1.146 \$&gt; apache-2.0Copyright 1996 Adam Twiss, Zeus Technology Ltd, http:/www.zeustech.net/Copyright 2006 The Apache Software Foundation, http:/www.apache.org/Benchmarking www.uccs.edu (be patien
Wisconsin - STAT - 572
Stat 572First Midterm ExamMarch 12, 20091.(a) false. R2 is necessarily higher when we add a predictors. (b) true (c) true (intercept, altitude, cultivated, summer, fall, bulbwidth). (d) false: the p-values are unchanged, but the coecient for al
Juniata - MA - 103
Call Now! 1-866-301-4142Hablamos Espaol !Due to strong customer interest in mortgage rates, we've set up a Special Hotline to provide assistance.Call now to receive a free, no obligation rate quote:1-866-301-4142Hours of OperationMon-Fri: 5
Wisconsin - CS - 701
Reading AssignmentRead Minimum Cost Interprocedural Register Allocation, by S. Kurlander et al. (linked from class Web page). Get Handout #4 from DoIt.CS 701 Fall 2003147Call GraphsA Call Graph represents the calling structure of a prog
UVA - BIO - 418
BehavioralEcologyB418 ButchBrodie 223GilmerHall(MountainLakeBiologicalStationOffice) bbrodie@virginia.edu http:/faculty.virginia.edu/brodie/ OverviewBehavioralecologyasafieldsprangfromthedesiretoexplainthebizarre behaviorsofbeastsandtounderstandthe
Iowa State - ASTRO - 120
2003 G. GonzalezLunar Phases - The MovieLecture 7- Lunar phases Phases of the Moon What causes them and what doesn't Phases of the Moon and time of day Lunar eclipses ILecture ChallengeA. What do you think causes the Moon to go through it
Iowa State - ASTRO - 150
Lecture 22 page 1Astro 150: CosmologyOutline: Hubbles law Cosmological principle Curvature of space After the Big Bang - nucleosynthesis - radiation era Cosmic microwave background: 2.7 K - flat + curved scenarios - critical density - Hubble
Iowa State - ASTRO - 150
Number of Students25ID Entries Mean RMS18 51 26.48 5.24120151050 0 5 10 15 20 25 30 35 40 45Number of points reached
Wisconsin - CS - 764
CS764 Midterm Solution SketchMarch 5, 2009You will have 120 minutes for this exam. Good luck! Note: you do not need to fill all the blank space to get full credit; I have purposely tried to give you a lot of extra room. 1. [15 points] Locking. a.
UVA - ECON - 410
UVA - ECON - 410
UVA - ECON - 410