Paper format. National Examinations, December 2016 — 07-Mec-A4, Design and Manufacture of Machine Elements. Three hours, open book, any non-communicating calculator. Six questions in two parts: Part A (Q1–Q3) is qualitative manufacturing-process theory, Part B (Q4–Q6) is quantitative machine-element design. The candidate answers two from Part A and two from Part B; four questions of equal value (25 % each) constitute a complete paper. All six are solved here, because the set is a study resource rather than an exam script.
Reference texts.
- S. Kalpakjian and S. R. Schmid, Manufacturing Engineering and Technology, 8th ed. — Part A (sheet-metal forming, casting, machine-tool selection).
- M. P. Groover, Fundamentals of Modern Manufacturing: Materials, Processes and Systems, 7th ed. — fine blanking, die casting, turning-machine classes.
- R. G. Budynas and J. K. Nisbett, Shigley's Mechanical Engineering Design, 11th ed. — Part B (welded joints Ch. 9, shafts Ch. 7, bolted and riveted joints Ch. 8).
- R. L. Norton, Machine Design: An Integrated Approach, 6th ed. — corroborating weld and riveted-joint treatments.
Check — weld allowable stress basis (Q4). The paper gives an electrode ultimate strength (E60, Su = 60 ksi) and a safety factor of 3.0, but not the strength theory. This solution uses the distortion-energy shear strength of the deposited metal, Ssu = 0.577 Su, divided by the given factor — the treatment used throughout Shigley Ch. 9. The alternative code route (AISC allowable 0.30 Su, which already embeds its own reserve) is worked out at the end of Q4 and gives a smaller leg. State whichever basis you adopt; the marker is looking for the weld-as-a-line method, not the code table.
