EECS215_Fall11_Midterm_Exam_1S

EECS215_Fall11_Midterm_Exam_1S - EECS 215 Fall Term 2011...

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Unformatted text preview: EECS 215 Fall Term 2011 Exam I Name: UMID Rules: 1. Closed Book 2. 1 Page (8.5” x 11”, double sided) of notes is allowed. 3. Calculators are needed and allowed. 4. Exam is given under the College of Engineering Honor Code principles and practices. 5. Work is to be done in Exam booklet. You may add additional pages if necessary. 6. DO NOT WRITE ON BACK OF PAGES. 7. In your solutions, briefly explain rationale; (e. g. KCL at node 1: i1+i2+i3=0 ...) 8. In addition to showing all important steps in your solution, write the final answer in the space provided at the bottom of the page. Sign the College of Engineering Honor Code Below. I have neither given nor received aid on this examination. Signed Do not write below this line Problem 1 [ _ ] Problem 2 [ ] Problem 3 [ ] Problem 4 [ ' ] Total Problem 1: Short Answers (5 points each) a) What is a piezoresistor and how is it used? H 7‘; a {eQHor M1906 raffle-ace Change!) WM“ “H’M’ mechanic“ gflmuius. The? a”, meg a) Jensen +0 9macva+t a 575"” at“W ‘H’Lq‘ r Mtckam‘ca! gut-(mu In: D) What is the superposition principle and how is it used? - I; at mam Cafl+ains Marc Mam om: “Md‘PEVldeM‘ WW“ M WW0“ Curmn+) rmpomm 90L an” dam/cm ’Mé’lu air-cm? “f5 equal 7‘0 rHu. aichraic fun»: oat. m Individual 5001164 cuff each haJ been acfmg aim. done all arm JO-«wcoa cxoaw 500mm '1‘ Jon]: M CWCMN' +9 ’Vk (Of '31,) Npeqd- {of NJ all We“ v z. k: Mk, I when M; M 4% Ofr Joacch ‘ "l c) What is an op-amp buffer and how is it used? 1Q" 0?” 0MP ’9qu w a V04+09c JOHOUJW Vfloflé’wma «We ’fnpwf Era/rm! whim mmamm; {mm +0 mania Mm [ya d Myriam cc - Problem 2: Analysis (25 points each) Find ix. Using nodc- VoHagc mc+hodc KCLOI-l'flodz 1; V1—39 + 1+ V1'Vt+ 0-91} :z 0 31) 10° 20 (1‘50, 4*: QO-V‘ ’30 Sub:+.'+u+et V I ' ' \ I x .— _L_+————-- -V '" "=0 I (SJ-loo 1° 5°) 2(20) 2 V1~2_§_-Y;=-l—-=> V1~?.E...\O'= 300 10 2 ‘ [45¢ (14- Wide, 2.- V V 212+ .3_.._L._ 0930"“ :0 go ‘20 3 0 “Tag. (g3)=fl—cz) fubS'fHu‘ffng @ 'Sn ® . ‘ v1._"_:j§__ 5-) v1:l8’~/ H: /6 - ;x:' 4—1}: —,= 30 - ix: A “I: " 3/L /{ V17— {ZILL 0L Problem 3: Maximum Power (30 points each) Find the maximum power that can be delivered to resistor R. ThéA/‘Cnm‘equivalavfi’ cum}; 0H +£vaals (a‘fla). 43nd Vac -' . . V —- -IO KCL a+nod103- iL—f— 29.4.5320 => va(_1,+1,_)=f-3 2+3+g g _ ‘I S ? '+ 5-“ "=7 Vac-- V fl 7’. — a—v = 5 _ H; _i I v to +( T; .2) _::‘l m I suppress a“ flu. COUrCeA +0 {Md 21-h: " 2ft ' WM...“ ma Rm:(31'+UJ'L+§JL)/l2flrlf4~'llq.fl ¢ . , —~--—~- : L Rrh £57,. 71,5va efiulwkni crmlé: 431w), Far maximum ’Poww "from:ch qua. m R: Laflufl -3 ‘2 WU’V‘V i R Panda: (Hum I?!” LMJ 2x 1mg “ ‘hwxro’zw Problem 4: Op - Amp (30 points) Determine the voltage gain vo/vs in the bridge amplifier circuit. (15.“an 436a! (op—amp model a. VH1 T: \fp1 __.. Vs r... :‘ 1,3,! 1:" 1n11'fiP-L: O Thmfiorc 111' Y1: :r VS _. low. [(3qu 11: 1/3.. 20k ...
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EECS215_Fall11_Midterm_Exam_1S - EECS 215 Fall Term 2011...

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