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25-Nav-B5 Marine Control Systems: May 2015

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

  1. Question 1 Hydro Turbines
  2. Question 2 Hydro Turbine Model (Vanderkloof)
  3. Question 3 Multi-jet Pelton Turbine
  4. Question 4 Curtis (Velocity-Compounded) Impulse Turbine
  5. Question 5 Gas Turbine Blades (Power Turbine)
  6. Question 6 Pump and Turbine Specific Speed
  7. Question 7 Cavitation and Erosion
  8. Question 8 Flow Control

Start with Question 1 →

Paper format: National Examination 98-Mar-B5 Fluid Machinery, May 2015 — closed book, three hours, 60 marks. Section A is calculative (Q1–Q5) and Section B is descriptive (Q6–Q8); the rubric asks for four questions of Section A plus two of Section B (six questions, each of equal value, 10 marks). All eight questions are solved in full as a study resource. General constants supplied with the paper: g = 9.81 m/s², patm = 100 kPa, pvapour = 2.34 kPa (20 °C), ρwater = 1000 kg/m³, ρair = 1.21 kg/m³ (15 °C).

Reference texts. S. L. Dixon & C. A. Hall, Fluid Mechanics and Thermodynamics of Turbomachinery, 7th ed.; R. K. Turton, Principles of Turbomachinery, 2nd ed.; H. Cohen, G. F. C. Rogers & H. I. H. Saravanamuttoo, Gas Turbine Theory, 6th ed.; R. W. Fox, A. T. McDonald & P. J. Pritchard, Introduction to Fluid Mechanics, 8th ed.

It is solved here exactly as printed.