PL Ballaney is a renowned author and educator in the field of mechanical engineering. He has written several textbooks on the subject, including "Theory of Machines and Mechanisms", which has become a classic in the field. With years of experience in teaching and research, Ballaney has provided a unique perspective on the subject, making it accessible to students and professionals alike.
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
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