Question

The relation between Zoπ and Zoπ^’ in the circuits shown below is?

(a) Zoπ = 2 Zoπ^’

(b) Zoπ = 4 Zoπ^’

(c) Zoπ = Zoπ^’

(d) Zoπ = 3 Zoπ^’

The question was asked during an internship interview.

I need to ask this question from m-Derived T-Section topic in chapter Filters and Attenuators of Network Theory

Answer 1

The correct answer is (c) Zoπ = Zoπ^’

For explanation: The characteristic impedances of the prototype and its modified sections have to be equal for matching. The relation between Zoπ and Zoπ^‘ is Zoπ = Zoπ^’.