If you search for the exact ISBN (e.g., 978-9386115395 for the latest edition) followed by "filetype:pdf" on Google Scholar, you might find course reserves uploaded by professors (though use these ethically).
V.P. Singh's contributions to the field of mechanical engineering are significant, particularly in the area of machine design and analysis. His book "Theory of Machines" has become a standard reference text for students and professionals, providing a comprehensive understanding of machine theory. Singh's work has influenced many researchers and engineers, and his book continues to be widely used in academia and industry. vp singh theory of machine pdf