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hw7_sol - ECE 202 Fall 2013 HW7 Solutions HW7 Solutions ECE...

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ECE 202 Fall 2013, HW7 Solutions HW7 Solutions ECE 202 Fall 2013 MK MN
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ECE 202 Fall 2013, HW7 Solutions 25. a) ) 3 ...... ( .......... .......... .......... .......... .......... .......... .......... .......... ) ......... ( ) ( ) 2 .( .......... .......... .......... .......... ) ......... ( ) ( ) ( ) 0 ( ) ( ) 1 ......... ( .......... .......... .......... .......... .......... .......... .......... ) ......... ( ) 0 ( ) ( s BlV s E s I M Bl s V M b s X M k v s sV s V x s sX coil (i) 0 ) 0 ( , 0 ) 0 ( v x (1): ) 4 ...( .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... ) ( ) ( s s V s X Put (4) into (2), we get ) ( ) ( ) ( ) ( s I M Bl s V M b s s V M k s sV In MATLAB clear all close all clc syms s t X V I B = .2; l = .1; L = .25; R = 125; M = 0.5; k = 100; b = 1.5; eq1 = s*X - V; eq2 = s*V + (k/M)*X + (b/M)*V - (B*l/M)*I; S = solve(eq1, eq2, V, X); S.V/I
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ECE 202 Fall 2013, HW7 Solutions ( ) ( ) ( ) (ii) ( ) ( ) ( ) b) (i) From ( ) we know ( ) ( ) ( ) And ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) (ii) ( ) (iii) ( ) ( ) ( ) ( ) ( ) c) ( ) ( ) ( ) ( ) ( ) ( ) ( )
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ECE 202 Fall 2013, HW7 Solutions d) ( ) ( ) (e) ( ) ( ) ( ) ( ) f) ( ) ( ) ( ) ( ) 26. a) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) b)
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ECE 202 Fall 2013, HW7 Solutions P=0 c) ( ) ( ) Note that the solution is not unique! d) In MATLAB clear all close all clc syms s t H Vin vin Vout vout vin=t^2*exp(-2*t);
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