Technical Drawing - Exam Papers - Ordinary - 1994 - Paper 1

Question 4

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  1. Draw one convolution of an Archimedian spiral where the shortest radius is 25 mm and the longest radius is 75 mm.
  2. The elevation and plan of a cylinder with two points, A and B, on its surface are shown in Fig. 4. Show the path of a helix on the elevation of the cylinder which passes through the points A and B and which reaches the top and bottom of the cylinder.
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