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22-Mec-A2 Kinematics and Dynamics of Machines: May 2013

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

  1. Question 1 Toggle Press — Mechanical Advantage
  2. Question 2 Radial Cam — 3-4-5 Polynomial Design
  3. Question 3 Compound Planetary Gear Reduction
  4. Question 4 90° V-Twin — Primary Shaking Force
  5. Question 5 Rolling-Disk Impact & Damped Free Vibration
  6. Question 6 Torsional Vibration of a 3-Rotor Shaft

Start with Question 1 →

Paper: National Examinations — 07-Mec-A2 Kinematics and Dynamics of Machines, May 2013. Open-book, 3-hour paper; answer FIVE of six questions, all of equal value (20 marks). Part A (mechanisms & machine dynamics, Q1–Q4) and Part B (mechanical vibration, Q5–Q6). All six questions are solved here.

Reference texts: R. L. Norton, Design of Machinery (6th ed., McGraw-Hill) — velocity analysis, cams, gear trains, engine dynamics; C. E. Wilson & J. P. Sadler, Kinematics and Dynamics of Machinery (3rd ed.); S. S. Rao, Mechanical Vibrations (6th ed., Pearson) — Part B; J. E. Shigley, Mechanical Engineering Design — gear geometry.

Note on the figure-based questions. Q1 (press) is a scaled graphical problem (“Scale 1:15”); its link geometry is read from the printed diagram, so the mechanical advantage carries a graphical tolerance of roughly ±5 %. Q3 (planetary box) is solved from the kinematic topology inferred from the sectioned schematic. Both interpretations are stated explicitly in a check callout so the reader can re-scale from the original drawing.