Since this is a standard textbook for electrical and electronics engineering students, I have written a blog-style review and guide below. This post covers what the book offers, who it is for, and how to use it effectively for your studies.
Instead of searching for "free PDF," search for "Ganesh Rao Control Systems preview" or "Google Books snippet." You can often read 20% of the book—enough for the first two chapters. control systems ganesh rao pdf