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DORDT COLLEGE ENGINEERING DEPARTMENT PROBLEM SETS on ELECTRICAL TOPICS (Last update: 4/28/2015 8:10 pm)
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PS # | Assigned | Due | Returned | Assignment |
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7
| 4/27 |
(no peer grdng) Turn this in on Wed. 4/29 at start of class |
Topic: Mesh analysis Read: Section 16 (p 36 – 38) Do Problems 25, 26, 27, 28. Optional: Video on mesh analysis (~20 min) The video link above combines the KVL equations and the substitution using Ohm's Law into one step. Otherwise it is the same technique presented in the reading assignment. The video's technique is a well- known shortcut that goes a bit beyond the material presented in the handout, and is truly optional. However 20 minutes spent watching the video might save 20 minutes on homework! The matrix inverse technique used in the video to solve simultanious equations may be replaced with any of several other techniques, including Gaussian elimination or Cramer's rule. The technique used in the reading assignment is a version of Gaussian elimination which avoids using matrix notation entierly. Optional: Milestones in Electrical Engineering Optional: Sigsaly—The start of the digital Revolution This assignment will be graded and returned to you during exam week. | |
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Lab rprt | 4/22 | 4/29 |
Write a lab report about your "Cylon eyes" project. (A report about the "railroad crossing program" may be substituted if you did not finish Cylon eyes.") Details about this report can be found on the EGR 117 Canvas web page in the "Lab" section. Turn this report in electronically | |
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6
| 4/15 |
4/27 4/27 at 5:00 pm | 4/28 |
Topics: KCL and nodes, equivalent circuits, equivalent of series and parallel resistors Review: Section 14 (p 30 – 33) Read: Section 15 (p 33 – 35) Do Problems 21, 22, 23, 24. Optional: History of heart pacemakers Optional: Arc flash (video) Optional: More on Arc Flash at Wikipedia This assignment will be graded and ready for pick-up outside of the engineering pod prior to the test. |
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5
| 4/13 |
4/15 4/27 | 4/28 |
Topics: Circuit Analysis, KVL and loops Read: Sections 13, 14 (p 28 – 33) Do: Problems 17, 18, 19, 20 Optional: A short biography of Kirchhoff Optional: On Wednesday (4/09) we will learn how to solder and build an FM transmitter toy. You can view a video tutorial on soldering and read about caring for the soldering iron. |
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4
| 3/30 |
4/13 4/15 | 4/27 |
Topics: Power Systems & Signals, Professional Membership, "CQD"--pubic safety and engineering, Bandwidth, "1984"--hubris and motives to do engineering (p 22 – 27) Read: Sections 9, 10, 11, 12 (p 22 – 28) Do: Problems 12, 13, 14, 15, 16 Optional: Nova Video, "Decoding Nazi Secrets" A quote from the show, ". . . brains over bullets." Available at The John & Louise Hulst Library Call no. D810.C88 D42 1999 (2 hrs, VHS) Companion web site at PBS Optional: 1984 Apple Macintosh Commercial (You Tube) Wikipedia on the Apple Commercial |
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3
| 3/25 |
3/30 4/13 | 4/15 |
Topics: Resistors, models and the passive sign convention Read: Sections 7 and 8 (p 18 – 22) Do: Problems 8, 9, 10, 11 Optional: Video lecture: The Passive Sign Convention Video lecture: Passive Sign Convention Examples Note: The passive sign convention is easy once you clearly understand it. However, there are lots of bad descriptions of it floating around on the Internet. Stick with the IEE handout, the videos above, or ask in class rather than consulting the Internet on this matter. Optional: The importance of understanding units Does $0.002 = 0.002 cents? (On Monday, 3/30, at about 2 PM Prof. De Boer corrected the regular due date from 4/01 to 4/13.) |
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2
| 3/23 |
3/25 3/30 | 4/13 |
Topics: Electric Energy, "Free Niagara," AC Circuits Read: Sections 4, 5 and 6 (p 6 – 18) Do: Problems 5, 6, 7 Optional: The Grid. (13 min. video) Optional: read about arc flash and watch When good transformers go bad, 480 volt 3-phase Arc Flash Demonstration An arc-flash incident in 2008 Detail on the above--the arc-blast. The point is that safety matters. Electric circuits can deliver impressive amounts of destructive energy when failures happen. |
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1
| 3/18 |
3/231 3/252 | 3/303 |
Topics: Charge and Current, SI units, Voltage Read: IEE Sections 1, 2, 3 (Read up to Section 4 on page 6.) Do: Problems 1, 2, 3, 4 Optional: 14 minute video on fuel cell cars. The due dates for this assignment were incorrectly shown as 3/20 and 3/23 until 10:28 Thursday morning, 3/19 when they were corrected as shown to the left. This class will meet on Mondays and Wednesdays only. |
| Note 1) |
Homework must be ready for peer grading and discussion at 9 or
10 AM (at the start of your class) on the first listed due date.
Peer grading will offer 4 points per peer grading event.
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| Note 2) |
Homework must be turned in for a final grade at 9 or 10 AM (at
the start of your class) on the second listed due date.
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| Note 3) |
Homework solutions are usually available one or two class periods
after the due date. Click the "returned date" on this page to
access the solutions. If the "Returned" date is not shown or is
not a link (is black, not gold) then the solution is not yet
posted. Check back later. If you click the link and get a login
screen instead of the solutions, log in using your usual
Canvas@Dordt username and password. Then, if necessary, use the
back icon (or alt-left-arrow on the keyboard) twice to get back
to the link on this page and click the link again. The link only
works when you are logged in to Canvas@Dordt.
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| Note 4) |
Problems sets shown above with no "assigned" date are
tentative. More problems might be added, expected due dates
might change, but problems shown will eventually be assigned.
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| Note 5) | If you are having difficulty reading the latest version of this page it may have to do with your browser's cached memory. Read this note on cached pages to solve the problem. |