DI-series and active codes
Installation, maintenance, protection, drives and final-semester systems.
Question-paper routes for all semesters, separated by code generation so the new and old syllabi stay easy to identify.
Open the verified question library with Winter/Summer badges and official paper links.
Current DI-series or active codes appear first, followed by the 43-series transition scheme and older 33-series papers.
Installation, maintenance, protection, drives and final-semester systems.
Use these codes for the immediately preceding GTU curriculum.
Long-run paper history for earlier diploma batches.