ECE 220 Basic Circuits Examination 2, University of Arizona, Exams of Electrical and Electronics Engineering

Download ECE 220 Basic Circuits Examination 2, University of Arizona and more Exams Electrical and Electronics Engineering in PDF only on Docsity! Color: Closed book/notes, calculators allowed up to level of TI89, HP48. Part I: 6 questions Part II: 6 questions Part II is worth twice as much as Part I. On the SCANTRON write and bubble-in your: 1. Name (Last, first) 2. Write the color of your exam paper (IVORY or GREEN) on the top left margin of the SCANTRON. Place your UA picture ID card on the adjacent desk where it can be easily seen. When the 9:30 bell rings, begin the examination. All work should be done on the examination paper. Allow for reasonable amounts of roundoff error, and carefully mark one choice for each problem on the SCANTRON answer sheet. All answer sheets and examinations will be collected at or before 10:30. You will be asked to stop writing and hand in your papers/answer sheets. Failure to comply promptly may result in disqualification from the exam. NAME: _________________________________ SIGNATURE: ____________________________ University of Arizona Department of Electrical & Computer Engineering ECE 220 Basic Circuits Examination 2 March 12, 2009     Part I. Which is a valid supermesh equation for the following circuit? a) 4i1 + 6i2 = -5 b) 4i1 + 6i2 = 1 c) 4i1 + 6i2 = -1 d) 4i1 + 6i2 = 5 e) None of these Find the Thevenin parameters for the following circuit: a) vTh = 9 V, RTh = 3.6 Ω b) vTh = 3 V, RTh = 6 Ω c) vTh = 9 V, RTh = 6 Ω d) vTh = 3 V, RTh = 3.6 Ω e) None of these Find the Norton parameters for the following circuit: a) IN = 2 A, RN = 2 Ω b) IN = 2 A, RN = 0 Ω c) IN = 0 A, RN = 1/2 Ω d) IN = 0 A, RN = 2 Ω e) None of these     Find v in the following circuit: a) -2 V b) 2 V c) 4 V d) -4 V e) None of these     Find v in the following circuit: a) 1 V b) -3 V c) 2 V d) 4 V e) None of these     Find vo(t) in the following circuit if vs(t) = cos104t. a) 2 cos(104t) V b) cos (104t - 45°) V c) cos (104t + 90°) V d) 2 cos (104t + 90°) V e) None of these