Drop a comment if you have the correct author name/year of publication. Will help others searching too. If you share the exact exam you’re preparing for (SSC JE, GATE, etc.), I can recommend the best objective PDFs actually used by toppers.
Has anyone come across a mechanical engineering objective book by DS Kumar? I can’t find it in standard references. ds kumar mechanical objective pdf
If you meant R.S. Khurmi or R.K. Jain, those are available legally on Archive.org and in most libraries. Avoid illegal PDF sites – they often have malware or incomplete scans. Drop a comment if you have the correct