Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format. National Examinations, December 2019 — 16-Mec-A4, Design and Manufacture of Machine Elements. Three hours, open book, any non-communicating calculator. Six questions divided into Part A (Q1–Q3, manufacturing processes) and Part B (Q4–Q6, machine-element design); candidates answer two from Part A and two from Part B, and all questions carry equal value (25 % each). All six questions are solved here so the paper can be used as a complete study resource.
Reference texts. R. G. Budynas & J. K. Nisbett, Shigley's Mechanical Engineering Design, 11th ed. (Ch. 3 stress, Ch. 5 static failure, Ch. 6–7 fatigue and shafts, Ch. 9 welded joints); S. Kalpakjian & S. Schmid, Manufacturing Engineering and Technology, 8th ed. (Ch. 15 bulk deformation, Ch. 16 sheet-metal forming); M. P. Groover, Fundamentals of Modern Manufacturing, 7th ed. (Ch. 19–20); R. C. Hibbeler, Mechanics of Materials, 10th ed.
