CSEC Technical Drawing Paper 2 May/June 2011 - Free CXC Past Paper with Answers

A regular pentagon has sides of 40 mm. (a) Construct the regular pentagon. (b) Enlarge the regular pentagon to a similar figure with linear measurements of its sides in the ratio of 3:5.

Construct the regular pentagon.

Enlarge the regular pentagon to a similar figure with linear measurements of its sides in the ratio of 3:5.

A triangle ABC has a base AB = 100 mm, sides AC = 80 mm and BC = 110 mm. (a) Construct the triangle. (b) Draw three circles touching each other which use vertices A, B and C of the triangle as their respective centres.

Construct the triangle.

Draw three circles touching each other which use vertices A, B and C of the triangle as their respective centres.

Figure 1 shows a simple mechanism with Point O fixed, OA revolves clockwise about O while AB slides through the pivoted block, C. OA = 35 mm, AB = 140 mm. (a) Copy the given mechanism. (b) Draw the locus of B for one revolution of OA.

Copy the given mechanism.

Draw the locus of B for one revolution of OA.

Construct an Archimedean spiral of ONE convolution with the longest radius = 120 mm and the shortest radius = 20 mm.

Figure 2 shows first-angle orthographic views of a BRACKET and a reference line XY inclined at $45^\circ$ to the horizontal. Draw (a) the given views (b) an auxiliary elevation on X – Y seen in the direction of the arrow “A”. Do not show hidden lines.

an auxiliary elevation on X – Y seen in the direction of the arrow “A”. Do not show hidden lines.

Figure 3 shows the incomplete plan and truncated elevation of a regular hexagonal pyramid. Draw the (a) given views (b) completed plan (c) surface development of the pyramid with the seam S-S as indicated.

surface development of the pyramid with the seam S-S as indicated.

Figure 4 shows the first-angle orthographic views of a vertical cylinder penetrated by a horizontal cylinder. Draw the (a) given views (b) completed elevation showing the (i) curves of interpenetration between both cylinders (Show hidden lines.) (ii) face of the horizontal cylinder.

completed elevation showing the

curves of interpenetration between both cylinders (Show hidden lines.)

face of the horizontal cylinder.

Figure 5 shows two views in first-angle orthographic projection of a machine block. Make a CABINET oblique drawing of the block.

CSEC Technical Drawing Paper 2 May/June 2011 Questions

Question 1

Question 2

Question 3

Question 4 (20 marks)

Question 5

Question 6

Question 7

Question 8 (20 marks)