The 2 setting time of a second order system is always smalle

The 2% setting time of a second order system is always smaller than the 5% setting time. Laplace transform is a time domain method to solve problems through simple algebraic manipulation. A stable system is robust. Select from the expressions below the one that best describes statements (A) to (C) (1) Expression (B) only is correct. Expressions (A) and (C) only are correct. Expression (C) only is correct. Expression (A) only is correct. Expressions (B) and (C) only are correct.

Solution

>> STATEMENT A

It is true ..

>> STATEMENT B

It ise xactly true as Laplace is an algebric method which required time to solve

>> STATEMENT C

It is wrong as stability and robustness are different from each other such as :

Firstly, robustness addresses behavior
in a more varied class of
• systems;
• perturbations applied to the system of interest;
• features whose persistence under perturbations is to be studied.