Reference texts: Kalpakjian & Schmid, Manufacturing Engineering and Technology, 8th ed.; Groover, Fundamentals of Modern Manufacturing, 7th ed.; Hibbeler, Mechanics of Materials, 10th ed.; Hibbeler, Engineering Mechanics: Statics, 14th ed.; Shigley's Mechanical Engineering Design, 11th ed.
Check: the exam is headed "98-Mar-A6, Design and Manufacture of Machine Elements" and Part A (Q1–Q3) is entirely machining/casting/forming content with zero naval-architecture material. Solved here as the paper actually printed; reference texts above are chosen for the real content. Part B (Q4–Q6) is genuine strength-of-materials/machine-design content.
Check: Q5 states the shaft modulus as "E = 30 ksi," which is off by three orders of magnitude for steel (actual E ≈ 29,000–30,000 ksi = 30×106 psi); the shaft's computed self-weight, w = γA = 0.283 × (π/4)(32) = 2.00 lb/in, comes out to a clean round number confirming the 3-in-diameter reading, and the printed "30 ksi" is treated as a dropped exponent (E = 30×106 psi used throughout).
