EGD Level 3 (Example of Exam paper Sept. 2012)

QUESTION 1: ISOMETRIC

FIGURE 1 shows two views of a tool holder drawn in third-angle orthographic projection. Do not draw the given views.

1.1

Construct a suitable isometric scale.

(3)

1.2

Below the isometric scale, draw an isometric projection of the holder.

(10)

No hidden detail is required.

                                                              

FIGURE 1

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QUESTION 2: ASSEMBLY DRAWING

FIGURE 2 (next page) shows the primary views of the components of a Footstep bearing.

The complete list of parts is as follows: Item 1……………..base…………………………..1 off………………………cast iron Item 2……………..body…………………………..1 off……………………...cast iron Item 3……………..bush…………………………..1 off……………………...bronze Item 4……………..shaft…………………………..1 off……………………...brass Item 5 …………….M16 hexagonal head bolt…..1 off……………………..mild steel

2.1	Draw as an assembly drawing, according to scale 1:2, a full sectional front view of the assembly.		(20)
2.2	Insert any five dimensions on the assembly drawing.		(5)

2.3

Insert the item numbers on the assembly view.

(3)

2.4

Insert a suitable title and scale centrally below the drawing.

(2) [30]

Figure 2

QUESTION 3: DETAILED DRAWING

FIGURE 3 shows three views of the assembly of a drive head.

Draw, according to scale 1:1 and in FIRST-ANGLE ORTHOGRAPHIC PROJECTION, detailed drawings of the following parts: (Show all hidden detail)

3.1

The pipe clamp  (item 1) showing the following views:

3.1.1 3.1.2

A full sectional front view with the left half in section A Left view

(10)   (10) [20]

Figure 3

QUESTION 4: INTERPENETRATION

FIGURE 4 shows, in first-angle orthographic projection, an incomplete front view and left view of  a  round pipe interpenetration.

4.1 4.2 4.3

Draw the TWO given views to scale 1:1 Complete the front view by plotting the curve of interpenetration. Show all the projection lines.

(2) (8) (2)

  

FIGURE 4

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QUESTION 5: DEVELOPMENT

FIGURE 5 below shows a square based sheet metal pyramid

5.1

Make us of a scale of 1:1 and develop the square based sheet metal pyramid by using the radial line development method.

                        

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