ECET 2026 MECH ECET 2026 MECH LearnNewThings September 24, 2025 0 Comments Day 9 Shafts & Keys – ECET 2026 Mechanical Why this topic is important for ECET? In ECET, questions from Design of Machine Elements are highly scoring because they are formula-based and concept-driven. Shafts and keys are fundamental...