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ECE2300_Final_Exam_Summer2007

# ECE2300_Final_Exam_Summer2007 - Name(please print Signature...

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Name: _____________________________ (please print) Signature: __________________________ ECE 2300 – Final Exam August 11, 2007 Keep this exam closed until you are told to begin. 1. This exam is closed book, closed notes. You may use one 8.5” x 11” crib sheet, or its equivalent. 2. Show all work on these pages. Show all work necessary to complete the problem. A solution without the appropriate work shown will receive no credit. A solution that is not given in a reasonable order will lose credit. Clearly indicate your answer (for example by enclosing it in a box). 3. It is assumed that your work will begin on the same page as the problem statement. If you choose to begin your work on another page, you must indicate this on the page with the problem statement, with a clear indication of where the work can be found. If your work continues on to another page, indicate clearly where your work can be found. Failure to indicate this clearly will result in a loss of credit. 4. Show all units in solutions, intermediate results, and figures. Units in the exam will be included between square brackets. 5. Do not use red ink. Do not use red pencil. 6. You will have 170 minutes to work on this exam. 1. ________________/10 2. ________________/12 3. ________________/15 4. ________________/18 5. ________________/20 6. ________________/25 Total = 100

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ECE 2300 Final Exam, August 11, 2007 – Page 2 Room for extra work
ECE 2300 Final Exam, August 11, 2007 – Page 3 1. {10 Points} For the circuit shown in Figure 1, two identical versions of the same device have been included in the circuit. Each device can be modeled by a current source in parallel with a resistance. The short circuit current for each device is 3[mA] flowing from terminal a to terminal b, through the short circuit. The Norton resistance for each device is -3.1[k ]. a) Find the power delivered by the voltage source. b) Find v X . c) Are resistors R 1 and R 2 in parallel? How do you know? d) Are resistors R 1 and R 2 in series? How do you know? R 1 = 1[k ] Figure 1 Device a b v X + - Device a b + - 6[V] R 2 = 2.7[k ]

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ECE 2300 Final Exam, August 11, 2007 – Page 4 Room for extra work
ECE 2300 Final Exam, August 11, 2007 – Page 5 2. {12 Points}

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