EECE 210 Exam, Spring 2005

SPRING TERM 2865-06 Prof. R. Chedid & ARCHITECTURE March 22, 2006 (EECE 210) ELECTRIC CIRCUITS & ELECTRONICS CLOSED BOOK (1% HRS) Programmable Calculators are not allowed Provide your answers on the computer’s card only Return the computer’s card attached to the question sheet Mark with a pencil your name and your ID-No Use pencil for marking your answers When using eraser, be sure that you have erased well Wt PENALTYIS6TO1 !!! 1. Determine X;, in the figure. | 1O< a) Infinite [ Os Va b) Zero Q Ria. Vea. | = o) 1kQ = $0510 & | d) 2kQ ss < . e) None of the above 3 [ ig 2v i ar 2. Considering ihe circuit below, find the current Io flowing through the resistor 3002. 502 330 50 WV | < WWW FY aa Ge wag To 5002 S (7) asy 300.2 | a) 0.667 A b) 1.000 A c) 1333A d) 2.000 A e) None of the above 3. Find the equivalent resistance Ry, in the circuit below. Each resistor is 100 Q b) ~250Q ¢) ~412.5Q d) ~275Q e) None of the above tw 4. Determine Vo in the figure, assuming an ideal op amp. aes a) 15V 2 Kas b) 5V €) &V d) 8V e) None of the above i0V © B WN In the circuit below R is a variable resistor. For what value of R the maximum power is transferred to it. a) 50Q b) 100Q c) 1502 d) 2502 e) None of the above 6. Find é in the circuit below. uh pW reer re’ | AV\ne pes 12v (*) i) S9BN 3A a) 64A b) 48 A ()) esiiN d) 7.3A e) None of the above ces) 7. A load resistance R in the range of [1,8] Q is to be connected across the terminais a.b in such a way that maximum power is delivered to it. Determine the power dissipated by R. cS on ta) es rae | Spm | a) 1053 W b) 4.17 W c) 5.95 W d) 8.26 W e) None of the above 8. Find the equivalent resistance between the terminals (a,b). a) 4500 b) 2.252 c) 1250 d) 80 Q e) None of the above 9. Calculate the voltage Vo across the 6 Q resistor due to the 36 V source only. g a) 15V b) 12V c) 18V d) 3V e) None of the above 10. For the circuit shown, find the Thevenin voltage seen by terminals b-d. EL ey) © a) 1V sulpe b) 1.5V 30 c) 2V d) 2.5V e) None of the above Q) © 6. 11. In problem 10, find the Thevenin resistance seen by terminals b-d: a) 20 b) 32 ec) 4Q d) 52 @) None of the above 12. For the circuit shown, find the Thevenin resistance seen by terminals a-b. a) ~0.620 b) ~1.6Q c) ~1.1Q : d) ~0.93Q a7] e) None of the above ay 13. In problem 12, find the Thevenin voltage seen by terminals b-d. a) 10V b) 20 V c) 30V d) 40 V e) None of the above 6