a) oracertain tuo port netuwork, Pt Pgi Parameters ?.-631 -tu\" 4 ..?2. 4 s. ,?2

Question

a) oracertain tuo port netuwork, Pt Pgi Parameters ?.-631 -tu" 4 ..?2. 4 s. ,?21 . 6.n , then the values of the adm i ttaince porameters Y and or the eame netuwork respectiwely q,9) An RC-low pass ?Her circuit h, acotaff frequency fc.318 Hz '# the resrstance R1OK the capocitance CTs nf a)21 b)?1 4 d)O-518 e)50 5000 ?14. h)non of the above A.) An RLC series circuit has R=24., mH and avariable apacitance C as shown belouo. The upHoge souce pying the circua hoo an cutput voageof 12.O Vrms at a frequency of 2GoH the capacitance f'sored til the magnitude of the uoHage Vs across the restance ?s Haximum'onder hits cendion Find the valve ef the capactance CH A. ga or the circit above the magnitude o the corrent I drawn by the circit ot resonance o hon of the a) 2a 2. ) 1.46 apove qs) A band-stop fi Her?desgnet USng asim le RLC series circuit with a capaci once C of loo nF and alou, and high Cutoff frequencies fl= 4535 HE,andf-5635H? ?of the Circuit Ps 5556 d)500 e) 100 Hz(dont use approximations) f)4635 g)?1449 h)non a the ndoctance and the reststance m the dboe queston ..Je respectively ) the valoes a) 398 , 63,? eD,3841o. 65. are_ V mH,and 3q-1,6540 [O, 6540 g) 3Q.8 , 63.4 h) non

Explanation / Answer

9

det of z matarix=z11z22-z21z12=6*6*-4*4=36-16=20

Y11=Z22/det of z matrix=6/20=0.3?

Y21=(-Z21/det of z matrix)=-4/20=-0.2?

correct answer---C

10

cutoff frequency fc=(1/(2*pi*RC))

C=1/(2*pi*318*10*1000)=50nF

answer--e

11

voltage across capacitor is maxium when it is under resonant condition

fo=(1/(2*pi2*(LC)0.5))

250*250=1/((2*2*pi*pi*20*10^-3*C)

C=20.3microFarad

Answer--e

12

I=V/R=120/2=60A

ANSWER g

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