EECS 215 Exam 1 Fall 2007 solutions

EECS 215 Exam 1 Fall 2007 solutions - EECS 215 Fall Term...

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Unformatted text preview: EECS 215 Fall Term 2007 Midterm Exam I Name: 5Q Ill T7ng 5 Lecture Section Terry Phillips Rules: 1. Monday, October 22, 2007, 6:00 to 7:30 PM nominal exam time. 2. Closed Book, etc. 1 l Page (8.5"xl 1", double sided) of notes allowed -, dand-Allewedrfio " permitted. 5. Exam is given under the College of Engineering Honor Code principles and practices. 6. No communications of any kind are allowed. Use of cell phones, cameras, personal data assistants, computers, or any other electronic devices, besides approved calculators, will be treated as an Honor Code violation. 7. Work to be done in Exam booklet. Turn in all pages of the exam. Do not unstaple the pages. 8. DO NOT WRITE ON THE BACK OF PAGES. M Work on backs of pages will NOT be graded. F). Show your work and briefly explain major steps to maximize partial credit. (for example: i3:il+i2, node A, KCL). NO CREDIT WILL BE GIVEN IF NO WORK IS SHOWN. l0. WRITE YOUR FINAL ANSWERS IN THE AREAS PROVIDED This Exam Contains 4 problems over 13 pages (including ample workspace). Sign the College of Engineering Honor Code Below. (NO credit will be iven for the exam without a sined led e): I have neither given nor received aid on this examination. Signed: Do not write below this line ;'F :f: :f: :f: :5: :1: :5: :1: :f: :3: :z: :3: :{: :E: :5: :k :i: z}: 2;: :l: :l: :f: :k :i: :k :‘F :i: :z: :3: 2;: :5: :i: :3: :{z 2%: :f: :z: :1: ;k :{c :5: ;:< :i: 2;: :{: :f: :5: ;{: 4: :f: >1: :f< :{1 :5: >3: :f: >l: :l: :{: 2}: :f: :9: >l: :{: 2;: :1: :E: :5: :{: :ic Problem 1 [ a b ] Problem 2[ ] Problem 3 [ a b c j Problem 4 [ ] Problem 1: Short Basic Problems 120 gointsz a) For the circuit below, determine the value for in. in: 0:0984 A (“Q b) Determine the value for the voltage V” in the circuit below. V 40 0.2 V0 (ML/mum ma’e VJ kCL: “Q {r VO’O-QVO KL: 4 + 5 0 Vo(-";' - 32%.?) = ; V455455'V Problem 2: Nodal Analysis— Nonplanar Circuit (30 points} ln this problem, we will analyze the circuit below to determine unknown node voltages v., v3, v3, and V4. Use nodal analysis to setup and solve 21 system of equations for these unknown voltages. 4Q KCL a suptmoq’e ,' Vl-vIS’ ’ 4H 7 7+ 5’ Z ’ VavV4,9-—VJ4_ X” My ’0 [0 V. (J;+é’)+l/2(Z"+J?)+ [/4/3 -.L :-.. W2) V43 W’Va + 3:1,, V4 ,0 5 lo ‘3” q V>("Jg)+ VIM—’5; 4",‘34'J3’ = 75 kvmsu: VJ'VI 7'" ix: {(7:14 6 Problem 3: Thevenin/Norton Eguivalent 130 Points! For the circuit shown below. we will determine the Thevenin equivalent (VTh, RTh) OR Norton equivalent (IN RTh) at terminals a—h. Oa + + “Va-1V Ob a) Directly determine the open circuit voltage VoczVTh OR short circuit current lsc=lN. at terminals a—b. V04 .' IVM’4/ dill/[$35 an c-‘raaxf 4; diam/q Ell-9 V49: V4,, —V1 1/“ «I 5 3 wag-rehw-gpfié m9 v.: V1655 + VI; __ 0.204,» 'I) :0 Vab("'§- ’0-2)+l/:('L§ *# ’ L'O'R V15:V0L b) Directly determine the equivalent resistance at terminals u-b for the circuit. DO NOT determine from the relation RTh=VTh/lN. Cl Sketch the Thevenin AND Norton equivalent for terminals a—b. Here you may use the relation RTh=VTh/IN to determine an unknown value. Indicate numerical values for circuit parameters on the sketch. 0a l l Problem 4: 09 Amp Circuit (20 Points! Determine the output vollugc v” and the current labeled i0 in the circuit below. 0.5 A 0 V0 3 v 6 Q kCL a V..' 0.51? 14’3ka Ida/g” g 0 I‘d-36") 349; 4_ 3sz—VJ -05’50 4 4 3 Mg, +3: -g)+v.(«g-;)= 0-5' l3 ...
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EECS 215 Exam 1 Fall 2007 solutions - EECS 215 Fall Term...

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