technical graphics - pdst

Junior Certificate Examination, 2011

Technical Graphics Ordinary Level Section A (120 marks)

Monday, 20 June Morning 9:30 - 12:00

Instructions

(a) Answer any ten questions in the spaces provided. All questions carry equal marks.

(b) Construction lines must be clearly shown.

(c) All measurements are in millimetres.

(d) This booklet must be handed up at the end of the examination.

(e) Write your examination number in the box provided below and on all other pages used.

Examination Number:

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GRADE

Question Mark

Section A

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Coimisiún na Scrúduithe Stáit State Examinations Commission

2011. S60A

Section A - of 6

Centre Number

TOTAL

The incomplete elevation and the end view of a post box are shown. Also shown is a 3D graphic of the post box. Insert the missing lines in the elevation.

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2

SECTION A. Answer any ten questions. All questions carry equal marks.

Section A - of 6

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In the space provided, make a freehand sketch of the toolbox shown. Colour or shade the completed sketch.

Name the computer components labelled A and B and give one use for each.

A: ________________________ Use ________________________ _________________________________________________ B: _________________________ Use _________________________ ___________________________________________________

A

B

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Section A - of 6

Fig.1 shows the design of a computer mouse based on an ellipse and two arcs. F1 is a focal point of the ellipse and is also the centre for the arc AOB. Locate the focal point F1 in Fig. 2 and complete the design by drawing the arc AOB.

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Fig. 1 Fig. 2

The elevation and plan of a bridge are shown. Complete the given sketch of the bridge on the grid provided. Colour or shade the completed sketch.

Fig.1 shows a logo for a restaurant inscribed in the square ABCD.

Draw the enlarged logo in the given square ABCD in Fig. 2.

Fig. 2 Fig. 1

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Section A - of 6

9 The figure shows a set of blocks. Draw, in the space provided, an elevation of the blocks in the direction of the arrow.

Using the scale provided, measure and write down the dimensions A and B of the pool table shown. A: B:

The outline of a boat and sail is shown. Write down the area of the sail in square metres. 1 square = 1 square metre. Area of the sail: ______ square metres.

The drawing shows the outline of a piano. Show clearly the points of contact between the circles A, B and C.

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Draw the shadow cast by the clock when the direction of light is parallel to the arrow.

Section A - of 6

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List the CAD commands used to produce the figures A to B and B to C.

A B C

Commands: A B _________________ B C _________________

The figure shows an incomplete perspective drawing of a data projector. A small 3D graphic of the projector is also shown. Complete the perspective drawing.

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Section A - of 6

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The figure shows a small weighing scales. (a) Name the shape of the base A. (b) Write down the size of the angle B. Shape of base A: ___________________ Size of angle B: ____________________

The diagram shows a design for a door handle. Rotate the lever L in the direction of the arrow through 30º about the point P and complete the drawing of the lever in the rotated position.

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Coimisiún na Scrúduithe Stáit State Examinations Commission

Junior Certificate Examination, 2011 Technical Graphics Ordinary Level Section B (280 marks)

Monday, 20 June

Morning 9:30 - 12:00

Instructions

(a) Answer any four questions. All questions carry equal marks. (b) The number of the question must be distinctly marked by the side of each answer.

(c) Work on one side of the answer paper only. (d) Write your examination number on each sheet of paper used.

2011. S60B

Section B - Page 1 of 4

SECTION B. Answer any four questions. All questions carry equal marks.


1 The figure shows the outline of an MP3 player and docking station. Also shown is a 3D graphic of the MP3 player and docking station.

Draw:

(a) An elevation in the direction of arrow A.

(b) An end elevation in the direction of arrow B.

Insert any four dimensions.

The figure shows the design of a model helicopter. The curve ABCD is elliptical. BD is the major axis of the ellipse and is 160 mm long. OC is half the minor axis and is 60 mm long as shown.

Draw the given portion of the ellipse and then complete the drawing of the helicopter. Show all construction lines.

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Every new house must have a Building Energy Rating - BER - certificate. The figure shows the elevation and plan of the initials BER. The grid in elevation is made up of 15 mm squares and the thickness in plan is 10 mm.

Draw one of the following views: (a) An isometric view of the initials or (b) An oblique view of the initials.

Note: The solution must be presented on standard drawing paper.

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The figure shows a design for a dustpan. Also shown is a 3D graphic of the dustpan.

Draw: (a) An elevation in the direction of arrow A.

(b) A plan projected from the elevation.

(c) The complete surface development of the dustpan.

Note: Ignore the handle of the dustpan in all your drawings.

The given figure shows the design of a logo for a camp site. Also shown is a small 3D graphic of the logo. Draw the given logo and then locate the points A, A1, A2, A3 and P as shown.

Find the image of the given figure under the following transformations:

(a) From point A to A1 by a translation. (b) From point A1 to A2 by an axial symmetry in the line A-A3. (c) From point A2 to A3 by a central symmetry in the point P.


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The figure shows a design for the body of a guitar. Draw the given design, showing clearly how to find the centres of the circles shown. Show all construction lines, tangents and points of contact.

technical graphics - pdst

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