Paper format. National Examinations,
May 2015 — 07-Mec-A4, Design and Manufacture of Machine Elements.
Three hours, open book, any non-communicating calculator permitted. Six questions
in two parts: Part A (Q1–Q3, manufacturing processes) and Part B
(Q4–Q6, machine-element design). The rubric asks for two questions from each
part, and all questions carry equal value (25 % each). All six are
solved here, because this set is a study resource rather than an
examination script.
Reference texts.
- S. Kalpakjian and S. R. Schmid, Manufacturing Engineering and Technology,
8th ed. — sheet-metal forming, deep drawing, abrasive machining.
- M. P. Groover, Fundamentals of Modern Manufacturing, 7th ed. —
stretch forming and the flow-curve treatment of forming loads.
- R. G. Budynas and J. K. Nisbett, Shigley's Mechanical Engineering Design,
11th ed. — bolted and welded joints (Ch. 8, 9) and brakes (Ch. 16).
- R. C. Hibbeler, Mechanics of Materials, 10th ed. — net-section
bending and bearing stress.
Units. The paper mixes systems deliberately:
Q1, Q5 and Q6 are in US customary units (inch, pound, psi) and Q4 is metric. Each
question is solved in the units in which it is set, as the exam intends.
