Question

Consider a function Z(s)=5(s+1)(s+4)/(s+3)(s+5). Find the value of L1 after performing the first form of Foster method.

(a) 5/9

(b) 9/5

(c) 4/9

(d) 9/4

I got this question in an interview for internship.

My question is 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 answer is (a) 5/9

Best explanation: We know R1=(3)(L1) and as R1 is 5/3Ω. So the value of L1 is 5/9 H.

L1 = 5/9 H.