ECE141_2006FALL_EXAM4__[0]

# ECE141_2006FALL_EXAM4__[0] - Eiectrical 8 Computer...

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Unformatted text preview: Eiectrical 8: Computer Engineering Department The Cooper Union ECEHI CirruitsandElecu'onicsI Emmimm l. The sown-cs in the iimar RLC cimuit shown in the ﬁgure below are deﬁned by vﬁt} - Wilt} V, id!) = 3.5 A and ism = 5i,(t}t HZ, 2. IbediedeDinthecircuitgivenbclowhaswt-mvoltagc vta o.7vm:,-u. The controlledsoumesmedcﬁmdbyv,=3vandi,=20i. a} Data-min: the state (anloff) of the dime D. b) Detenm'nc the cWand voltage V0. 1:) Obtain the logd’linc cquatiﬂfor the diode I). Then, identify on a sketch for the load Knit .u» the (2—point := ( V5513qu- n‘p' 1 The sources in the linear time-invariant RLC circuit shown in the ﬁgure below are deﬁned by gm = 10.6mm: + 90") A and Mt) - 4m:- ECElﬂ Cirtuitsdemicsl F‘malEnmhntiuniFaﬂm 2) Obtain the tip-domain model for the circuit. 11) Dctcrmine the steady-me expressions for the cum Mt) and the load voltage VIII). "c) Calculate the average pow-u EL delivcmd to tho load and tho power factor at the. load. 6) Determin tho complex power: SA associated with tho current source Ht}. 3) Determine the real power and the reactive power associated with the source i.(t). 1?}; 4. Each of the diodes in the cimuits shown below has a cabin voltage vT- 0.5v, :, - o and ‘V'T - ZSmV. Determine for cash circuit, i} the small—gm! mode] for m: diodc, and ii} tit: voltage V, ' a) b) c3 1.51:0 D D A?" O 5. The dependent sourcesintholinwcircuit givmhelowaredeﬁnod by vI = wk and i, =4i,_. ThnindepondcntsmnccsmV,-20Vandi.ﬂ2k 3) Determine the value for the load resistor RL that would result in maximum power transfer to it by this ciImIit. 1)) Calculate the maximum powcr that cm be delivered to KL by the circuit. c) Specify the appropriate power rating for the load resistor RL detamined in part (at. I771 ...
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ECE141_2006FALL_EXAM4__[0] - Eiectrical 8 Computer...

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