Question

The network function N (S) becomes _________ when s is equal to anyone of the zeros.

(a) 1

(b) 2

(c) 0

(d) ∞

This question was posed to me in unit test.

This intriguing question originated from Poles and Zeros of Network Functions topic in section S-Domain Analysis of Network Theory

Answer 1

The correct answer is (c) 0

The explanation is: The network function N (S) becomes zero when s in the transfer function is equal to anyone of the zeros as the network function is completely defined by its poles and zeros.