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25-Nav-B1 Applied Thermodynamics and Heat Transfer (25-Mec-A1): May 2013

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Short-answer fundamentals
  2. Question 2 Overhung diving board — impact stress and safety factor
  3. Question 3 Two-gear shaft — fatigue diameter and deflection
  4. Question 4 Journal bearing sized by no-load (Petroff) power loss
  5. Question 5 Bolted cylinder-head joint — preload and bolt grade
  6. Question 6 Short-shoe external drum brake — torque, actuation, self-locking

Start with Question 1 →

National Examinations, May 2013 — 98-Mar-B1 Advanced Machine Design, 3 hours, open book (Part I: Questions 1–2 compulsory; Part II: any THREE of Questions 3–6; all six answered below for full study coverage).

Reference texts: R. G. Budynas & J. K. Nisbett, Shigley’s Mechanical Engineering Design, 10th ed. (shafts §7, bolted joints §8, bearings §12, brakes §16); R. L. Norton, Machine Design: An Integrated Approach, 5th ed.; R. C. Hibbeler, Mechanics of Materials, 10th ed. (impact loading, beam deflection); R. C. Juvinall & K. M. Marshek, Fundamentals of Machine Component Design, 5th ed. (journal bearings, friction brakes).

Check: this paper, although listed under Applied Thermodynamics and Heat Transfer, is headed “98-Mar-B1” with printed title “Advanced Machine Design”; it is a general mechanical machine-design paper — stress/yield criteria, journal bearings, impact loading, shaft fatigue, bolted-joint preload, and drum brakes — with zero thermodynamics or heat-transfer content, and it is solved as the exam actually printed.