Question

Consider the impedance function Y(s)=(s^2+4s+3)/(3s^2+18s+24). Find the value of R2 after realizing by second Foster method.

(a) 5

(b) 6

(c) 7

(d) 8

I had been asked this question in class test.

Question is taken from Synthesis of R-C Network by Foster Method topic in portion Elements of Realizability and Synthesis of One-Port Networks of Network Theory

Answer 1

Correct choice is (d) 8

Best explanation: We get the value of P2 on taking the partial fractions as 1/8. And we know R2 = 1/P2 So the value of R2 is 8Ω.

So, R2 = 8Ω.