MCQ Practice Question

As K approaches infinity, root-locus branches terminate at?

AOpen-loop zeros, including zeros at infinity
BOpen-loop poles only
CThe origin only
DThe positive real axis only

Correct Answer: A. Open-loop zeros, including zeros at infinity

Explanation: Branches end at finite open-loop zeros; if there are more poles than finite zeros, the remaining branches terminate at zeros at infinity.

Reference: Standard control systems: root locus