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solutions sample test 1

# solutions sample test 1 - ECEZOO —— 051 Test#1 Summer...

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Unformatted text preview: ECEZOO —— 051 Test #1 Summer 2005 Print Name K e By signing I am stating that I have taken this quiz in accordance with the NCSU honor code. Signature 1. Find the value of Vs given Vx = 2V. a ,z’v .L. A JL \)\ \ ~ ‘05.!“ — S KVL Rwy: *2. +LOJZ+3 :0 K); 2. =- 3— ‘/2,0 A 6V 1 09 2. In the circuit above, the switch has been closed for a long time and opens at t = 0. a. Draw the t < 0 circuit. Reduce the circuit by combining resistors in series or W“ \0 parallel and ﬁnd vc(0') and ic(0'). \ 55L dc, 533 QQLQ’“) ; DR ID ' \Idw 1 UL: lo+s Cb) b. Draw the t = O+ circuit and ﬁnd Vc(0+) and ic(0+). 4v NIL” KWOUQ aULL/Cj") r“ . < Z KVL M; —q + \Oxkz :0?» JV A'A 3a. For the signal above, ﬁnd the peak to peak voltage, DC voltage, period, frequency, and duty cycle. T: Cami f= .—. JG K-ﬁ-E ,_\__ L9 who 42: mm + to to + mate) c : 3b. For the voltage signal above, ﬁnd the Amplitude, frequency, DC voltage, and phase shift (6 may be negative). v(t) = VDC + Acos(27tft+6) Volts l i , ___\_,_ \OO , Tax .OOb W SKIOOg». S. 290W PQQk—S begooe £30 so G>D J§T :é \ ., . .._.. a n 3. -~ 8 Tl” st ~/’/—————_\‘ wee}: \ob’ + as Co3®ﬁézoot+Wx \/ 4. 21. Given vs(t) = 2cos(10t)V in the circuit above, deﬁne all branch currents on the circuit diagram above in terms of i1 and i2. b. Write 2 KVL equations and solve for i1(t). KVL bOJr‘rom‘. ~ 5 + wait 4(1):) +~ toﬂciarqcﬁ :. 0 5. a. Is the diode “ON” or “OFF” when V(t) = +10V? 2“ Q (\j “y b. Find i when V(t) = +10V 3"” KVL LQ€+I ’iCD'i'LOJ. +\ *9 1" “a ._._,_ uk + (052/ ’- ZV KULR¥1_\+V\Ji—f +12“? \Lx: QR KCL:J<&;V;‘\A*; /“’A‘>b\/ .r I/ c. Is the diode “ON” or “OFF” when V(t) = -10V? g “0 (:3 \w d. Find i when V(t) = -10V Q L. L; f a ‘ KVL OUT-‘3 +10 +koq; «— Kind; 41-» at _, 4- H “M F f— va ( ..____ ZU KVL Le€+r +« l0 + LDC'\R3+U65 3’0 'Ud:~Lw 4 \le: \/ ...
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