The core text for your search is " Theory of Machines and Mechanisms " by P.L. Ballaney, published by Khanna Publishers.
Verdict: For pure Theory of Machines in a 3rd-year mechanical engineering degree, Ballaney is superior to Khurmi (which is better for diploma students) and on par with Rattan for theory, though Rattan has better diagrams. theory of machines and mechanisms by pl ballaney pdf link
There is no official, free PDF version of Theory of Machines and Mechanisms P.L. Ballaney available for download due to copyright protections The core text for your search is "
The book is particularly popular for students preparing for competitive exams like GATE, IES (UPSC), and various SSC JE exams because of its structured numerical problems and clear diagrams. Key Topics Covered in the Book There is no official, free PDF version of
: Detailed solutions for chapters 1 through 4 of the 3rd edition can be viewed on Similar Academic Texts