Question

For transfer function of a physical two-port network (a) all zeros must lie only in the left half of the s-plane (b) all poles may lie anywhere in the s-plane (c) the poles lying on the imaginary axis must be simple (d) all the above

Answer 1

The correct answer is the option d - All the above.

A two-port network is defined as an electrical circuit or network or a device that has two pairs of terminals which are connected to the external circuits.

Each pole of the transfer function lies only in the left half of the s-plane and it strictly has a negative real part. All the simple poles lie on the imaginary axis.