This preview shows pages 1–5. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: ECE 345
Fall 2009 Exam I _
100 Points — 50 Minutes Problem Page Value Score
1 1 10 2 l 15 3 2 20 4 2 5 5 3 25 6 3 10 7 4 15  TOTAL Instructions: 1; . Print name, PID and section number below. 2. Closed book / Closed notes 3. No programmable or graphing calculators allowed; only simple
scientiﬁc calculators permitted. 4. Work only in the spaces provided; show all work. 5. Keep yourueyes on your own work. Any and all cheating will be dealt
with to the full extent of University policy. 6. Turn off and stow any cell phones, PDA's, etc. 7. Express all answers in proper engineering notation. mWWW PE): E I
SECTEON N04 1. (10) Find the minimum value for R that can be used Without exceeding a 1/2 Watt
rating for the resistor. 3. (20) Use the current divider rule to ﬁnd currents i1 and i2.
M est‘2‘“ («092: .02, 2" «game @+3 . 30 {i”"c,ta/\0k if). w VKVB
My, “gaffes/4; “thew ‘ v : {Q Gagadj
‘ ‘7' m0 058’
gawk Azmgg ﬁg>$ ’ngyzg (CREE/k Wmf? ’7: 20M”: *5 #Qm f? (KCEQB
4. (5) Use KCL to determine the unknown current i. ' 92A 5. (25) Find Reg, is and detelmjne the power absorbed by the voltage source. equivalent resistance of 4 Q. Find R. fol/HO/IR =4 «ta—$.22va @9311; 3W< I 8R 3 32 WW @
W =3 32;.» we? R :2 8R “0 PM“! 7. (15) Consider the circuit below: c. I . “Q £21); A (3) Find the entrant i.
_ V’ g
6?: 9+:2;+'2.8 AM ~‘ B (4) Find Vow. I I \yéw a (12.27:) (m) w 6, 3.5%; C. (8) Find the power delivered by the source by at least two different methods. (D ?:4f2 == (i0)(:227> : 2.27W 2, y ,
@ P 3 AZ'RQi a: (:22?) 4”»: W W105+ ~ @4an F a“? v w £623 :3 ’1 m} Ea? 2 ‘7 gar {vi/35‘} {mafia ...
View
Full
Document
This note was uploaded on 10/24/2010 for the course ECE ECE 345 taught by Professor Shanblatt during the Fall '09 term at Michigan State University.
 Fall '09
 Shanblatt

Click to edit the document details