Question

Consider the admittance function, Y(s)=((2s^2+16s+30))/(s^2+6s+8). Determine the value of R∞ after performing the second form of Foster method.

(a) 3

(b) 1

(c) 2

(d) 4

I had been asked this question in a job interview.

I need to ask this question from Synthesis of R-L Network by the Foster Method in chapter Elements of Realizability and Synthesis of One-Port Networks of Network Theory

Answer 1

The correct choice is (c) 2

To explain I would say: On performing partial fractions we get the value of R∞ is 2Ω.

R∞ = 2Ω.