Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format. National Exams, May 2019 — printed code 16-Mec-A6 Advanced Fluid Mechanics (the cover page and every running header read 16-Mec-A6, May 2019). Three hours, OPEN BOOK, any approved Sharp or Casio calculator permitted. Six questions are printed; any five of them constitute a complete paper for 100 marks, each question carries an equal 20 marks, and the item weights are printed in the left margin. No aid sheet is bound into the paper — the open-book rule is the candidate’s table source, so every compressible-flow ratio below is quoted in closed form rather than read from a chart. All six questions are solved here.
Reference texts. Solutions follow the conventions of the texts the EGBC syllabus recommends for this subject:
SI units throughout. Air and mercury properties are those printed in the question; all pressures are absolute unless a gauge value is stated explicitly. Water and air properties not printed in the paper are taken from the standard Canadian-edition property tables at the stated temperatures, and each such value is named where it is used.