CSEC Technical Drawing · May/June 2005 · Paper 2

13 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. 120 marksFigure 1 illustrates a template for a 5-pointed figure with AB = BC = CD = DE = EA = 40 mm. Replicate the figure, showing the geometrical construction method used to determine the five points A, B, C, D, and E.
2. 2(a)8 marksConstruct a triangle having a base length of 100 mm and base angles measuring 75° and 45°.
3. 2(b)12 marksInscribe the largest possible square inside the constructed triangle such that one side of the square rests on the base of the triangle.
4. 3(a)10 marksDraw the outline of the template shown in Figure 2 at full size (1:1).
5. 3(b)10 marksClearly show the construction methods used to establish the tangents, indicating all points of tangency.
6. 420 marksConstruct an Archimedean spiral of two convolutions, given that the longest radius is 80 mm.
7. 5(a)8 marksDraw full size the given surface development of the sides of the right square pyramid cut at its lower end as shown in Figure 3.
8. 5(b)12 marksDraw the completed plan and elevation of the pyramid with DC positioned as the base.
9. 6(a)8 marksUsing a scale of 1:1, draw the two given orthographic views of the machined block shown in Figure 4.
10. 6(b)12 marksProject an auxiliary elevation on the reference line XX oriented at 60° to the horizontal.
11. 7(a)6 marksDraw full size (1:1) the given plan view of the intersecting cylinder and square prism shown in Figure 5.
12. 7(b)14 marksDraw the complete elevation showing the curve of interpenetration between the square prism and cylinder.
13. 820 marksUsing a scale of 1:1, draw an oblique projection of the machined block shown in Figure 6, positioning line X-X as the lowest line.