spring 2011 final exam version a

spring 2011 final exam version a - FinaIEIantA - EL 3111::...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: FinaIEIantA - EL 3111:: ' - Spring sou nest-nausea Sfiliflfiiflh’fl . . . . n . _ _ _ _ .___. ..... ...'. __________ _. ' Last Name I " First Name ' Section ii Note: You must write your name and section #. Incorrect section at or blank in the section'space will lead to a 5 point pity. No exceptions. There are five problems in this test spread over fitnr sheets. Including the cover page, there are seven type-written pages. The last page is left blank for your use, if you need it. ' Read each question carehllly before attempting to write answer and please try to answer each question in the space provided. There is suficient'spaee for each'pert‘s answer.— ShootIr all the steps leading to the solution. What may be obvious to you onto your calculator may not he that obvious to the reader. Showing steps helps secure a partial grade if the procedure is correct. ' - ' . _ Hyou do not wish any material to he graded, you must cross it out. If you leave unwanted material written on the test, it will he considered part of the answer and. _ graded. You will be'penalized for not deleting it in case it is erroneous. ' ' There are penalties for not writing units. Each time when unit is omitted or mitten: _ - incorrectly, one point will he taken off. No exceptions; Be oarefisl. ' ' Your score in this test will appear at the end of the last problem. 'm. 1 I Answer each part in the space provided. 4; _[a] In the circuit shown, R1, is variable. “.113 ' '. R ,- What are the maximum and minimum values of 15? - 'RL‘T—D :,_ I5 r2. _\i3 C WE} . Rt . . ' RL “1.700) 31:5 '1 Icmim‘l I I 1 Pl At What time is the induetor voltage at its maxinutm. Cd— JC'LU: 4 ' (d) An induetor is connected in series with a resistor. Show the phasor diagram for the We voltages. ' - Hint: Assume a sinusoid for current and find the voltage sinusoids. L . -+ 'u' R — 4 (e) A11 appliance is rated for 22!] "ii, 6|] Hz, 15 A. It is used two hours eaoh day. Can you estimate the monthly,r energyr consumption flow the above data? Explain. Na, __ WL.._%F——E=?L Pym g Prob. 2 Consider the DC circuit shom 5 (a) Givefi 10 = 4 A, using only KCL, KVL, and ohm’s law, find 11. :1: S~1fl£§EQ: H31 30+ 1371:" “S'ZFB—lv-Zw'I—‘:—O 191‘: Hap-+.§CL17'*10'CI) "It ‘2— #143!- ‘g‘ {:93 (h) Suppose In is not given. Use Thevenin’s theorem to final]. ETA Cg TYBNE' diwflaffié-r I . I In EJ'ZLQ'I' . , an 5251— 1‘25?) 5" _ _ _ (o) Hot».r much poorer is absorbed in tho ounont source?- "-'L \J 2; - _‘£$'Cl")-* 6TH) :1 '* 5’03; on 5? (ST) E. P: am“) Prob. 3 The. following circuit was in a DC Steady state at t = IT and tho switch movos from position (a) to (b) at t = D. 5 5 _ 5 5 {b} Whatismeindunmrcurreifilnng find: afierfimmfitolfing occurs? :T—ad' ~ - “'7 rLLaw Car-1'} 7. (c) Datefiim: the time mnstant 1: after the switching. Rm "-1 1'5 "‘r (gig-EH2”) ' I LHJJL- L.__ E QGW H _ 5L r' Elfin ' Quil— {' 1; RBI/LS- ' P #- ,3 " . 'I‘fi'H? mm: 5+ LM’SJE '3‘ (eJFindvxitfl-artbfl. “g; * Wit—“‘1' L‘ . *r T _. C, '_ . 11x: \SEE-‘r‘gfl'tlJr Ham __-L: :CSD" LES—‘3? ‘5 (If) V (f) Is vfit} continuous at t = fl? Ju'stify your answer. Egg") I“; 16’0er I \LR (0+3 = Wharf— r I séy Prob. 4 ID {5.) Find Ithe equivalent impedance seen by the source. Give your answer in the rectangular form. ' - ' ' Kai [flier file; in I 9'” “i ("WW Cliff?) ' 1" me; \1 C150”) . ' {w =. Ea.“‘VJ"‘*-’) “(L Jm+qflgi+ch 5 (b) Find the phasor Is in polar form; —. E :_ 2:940?‘ wow 15 :'.:I Log—+— 4’63qu P: 5 {c} How much oompiex power is provided by the source? . “firt- "“-=fi- 1' @325 \m 3 figs is; 3%? “04 _ -’ '- r flow—=1er 3‘51.(13)-V.15I- . g {$.01 +31%:ng ' 5A 5 {d}FindthephasurI1. _ fl" _ Am I '- "J‘Jb-tj‘lo a. '1.- 1 1L? 11 -d in: if H 11910 P? @9ch Lahsc’fi 5 [e] Detamfine the average pqwer in rasistor R1. E“; '—'-'1 O 1 151310 - . 1t 1.; PT— “ I? Rfl . fl“ _ - "1-. P: L_ twat/Ema "39-0 P ... "5. 53 w Yam scnrein thistest ................... .. I ...
View Full Document

This note was uploaded on 07/10/2011 for the course EEL 3113c taught by Professor Staff during the Spring '11 term at University of Florida.

Page1 / 7

spring 2011 final exam version a - FinaIEIantA - EL 3111::...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online