Predicting performance
Testing and diagnostics
Improving machine performance
Design/selection guidance
A: Rarely. Occasionally, during COVID lockdowns, publishers offered free access. Today, no. However, many college libraries provide remote access to PDFs for enrolled students. Predicting performance
The book contains over 1,500 MCQs. Use a PDF annotator to hide the answers. Take a chapter test. For incorrect answers, hyperlink back to the relevant theory section in the PDF.
Fortunately, legitimate pathways exist:
Recommendation: Search for "Theory and Performance of Electrical Machines by JB Gupta ebook" on legitimate platforms like Amazon.in or Google Books. The average cost is ₹300–₹450 for the digital version—less than a pizza, but a lifetime of knowledge.
The latest paperback edition of J.B. Gupta costs approximately ₹650–₹850 ($8–$10 USD). While affordable in Western markets, this can be a barrier for students in developing regions. A freely available PDF, though often pirated, becomes an attractive alternative. Testing and diagnostics
A: The latest is the 5th or 6th Edition (depending on year). For GATE 2025 or university exams in 2025-26, get the 6th Edition as it includes updated questions from recent papers.