CSEC Technical Drawing · May/June 2009 · Paper 2

16 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)10 marksConstruct triangle ABC with altitude 70 mm and base angles CAB = 45° and ABC = 60°.
2. 1(b)10 marksInscribe the largest square within triangle ABC, with one side resting on AB.
3. 2(a)8 marksConstruct a right-angled triangle with AC = 156 mm, side AB = 142 mm, and a wheel diameter of 50 mm.
4. 2(b)12 marksConstruct a cycloid for the circle rolling along AC, using point C as the initial starting point of the cycloid.
5. 3(a)14 marksReproduce the template profile, showing clearly the construction methods used to obtain straight line AB and the centres of the arcs required.
6. 3(b)6 marksIdentify clearly the method of obtaining all points of tangency.
7. 4(a)8 marksConstruct the rhombus with diagonal AC = 150 mm, sides = 90 mm, rod EF = 50 mm, and EP = 20 mm.
8. 4(b)12 marksPlot the locus of point P as rod EF slides between the diagonals such that ends E and F always remain on diagonals BD and AC respectively.
9. 5(a)8 marksCopy the given layout as shown.
10. 5(b)12 marksConstruct a one-point perspective view of the channel block.
11. 6(a)10 marksUsing first-angle orthographic projection, draw the given elevation and completed plan showing the cut surface.
12. 6(b)10 marksDraw the surface development of the truncated pyramid with the seam as indicated.
13. 7(a)6 marksDraw the given plan and elevation.
14. 7(b)10 marksDetermine the true length of AB using either the revolution method or the auxiliary method.
15. 7(c)4 marksMeasure and state the true length of AB.
16. 820 marksDraw one complete turn of a right-hand helical circular cross-section spring, having a pitch of 120 mm, centre line diameter of 116 mm, and wire diameter of 16 mm.