Question

The need of assuming non-linear element as linear:

(a) Simplicity of analysis and accuracy of results

(b) Ease of calculations

(c) Less time consuming

(d) Mathematical tool available

This question was addressed to me in semester exam.

My doubt stems from Linear Approximation of the Non-Linear System topic in chapter Control System and Components of Control Systems

Answer 1

Right option is (d) Mathematical tool available

The best I can explain: All the mathematical tools are available as per ideal cases so it is necessary to make assumptions for non-ideal to be nearly ideal and hence do the necessary calculations as needed.