The CORRECT transfer characteristic is

It is a Schmitt trigger and phase shift is zero.

No Explaination.

No Explaination.

An open loop system represented by the transfer function is

Open loop system stability is depends only on pole locations ⇒ system is stable There is one zero on right half of s-plane so system is non – minimum phase

⇒ it satisfies the half wave symmetry, so that it contains only odd harmonics.

⇒ It satisfies the even symmetry. So b_{n} = 0

No Explaination.

No Explaination.