Question

Which of the following statements is not necessarily correct for open control system?

(a) Input command is the sole factor responsible for providing the control action

(b) Presence of non-linearities causes malfunctioning

(c) Less expensive

(d) Generally free from problems of non-linearities

This question was posed to me in final exam.

This is a very interesting question from Observer Systems topic in portion State Variable Analysis and Design of Control Systems

Answer 1

The correct option is (b) Presence of non-linearities causes malfunctioning

To elaborate: Open loop control system are the systems which have no feedback and cannot be used to obtain the desired response and non-linearities does not cause malfunctioning.