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22-Mec-A2 Kinematics and Dynamics of Machines: May 2015

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

  1. Question 1 Six-bar mechanism — instant centres, mechanical advantage & output speed
  2. Question 2 Radial cam — minimum-peak-acceleration design, flat-faced follower
  3. Question 3 Compound planetary gear train — arm speed & relative gear speed
  4. Question 4 Four-bar mechanism — shaking-force balancing to 50%
  5. Question 5 Coupled two-degree-of-freedom vibration
  6. Question 6 Pendulum with spring & damper, perfectly-plastic impact

Start with Question 1 →

Paper format: EGBC National Exam, 22-Mec-A2 “Kinematics and Dynamics of Machines”, May 2015 (source code 07-Mec-A2). Open-book, 3 hours; six questions of equal value (20 marks each), candidates answer any five. Part A — mechanisms and machine dynamics (Q1–Q4); Part B — mechanical vibration (Q5–Q6). All six are solved in full below.

Reference texts: R. L. Norton, Design of Machinery, 5th ed. (instant centres & mechanical advantage, cam design, four-bar force balancing, epicyclic trains); S. S. Rao, Mechanical Vibrations, 6th ed. (multi-DOF free vibration, modal analysis, impact response); J. E. Shigley & C. R. Mischke, Mechanical Engineering Design (epicyclic train-value cross-check).