Question

A driving point impedance with zeros at ω = 0, ω = ∞ must have an excess ___________ term in the denominator polynomial.

(a) s^2+ωn^1

(b) s^2+ωn^2

(c) s^1+ωn^2

(d) s^1+ωn^1

This question was posed to me during an online exam.

I need to ask this question from Frequency Response of Reactive One-Ports topic in chapter Elements of Realizability and Synthesis of One-Port Networks of Network Theory

Answer 1

Right option is (b) s^2+ωn^2

Easy explanation: The driving point impedance of the one-port is zero, and it will pass both direct current and an alternating current of an infinitely high frequency.