Technical Graphics Ordinary Level Section A (120 marks)

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1 Coimisiún na Scrúduithe Stáit State Examinations Commission S60A Junior Certificate Examination, 2012 Technical Graphics Ordinary Level Section A (120 marks) Monday, 18 June Morning 9:30-12:00 Centre Number (a) (b) (c) (d) (e) Instructions Answer any ten questions in the spaces provided. All questions carry equal marks. Construction lines must be clearly shown. All measurements are in millimetres. This booklet must be handed up at the end of the examination. Write your examination number in the box provided below and on all other pages used. Examination Number: Question Section A TOTAL GRADE Mark Section A - Page 1 of 6

2 SECTION A. Answer any ten questions. All questions carry equal marks. 1 Shown is the incomplete elevation and incomplete end view of a writing desk. Also shown is a 3D graphic of the desk. Insert the missing lines in both the elevation and the end view. 2 In the space provided, make a freehand sketch of the wastepaper bin shown. Colour or shade the completed sketch. 3 List one advantage and one disadvantage of a tablet computer, as shown. Advantage: Disadvantage: Section A - Page 2 of 6

3 4 Fig.1 shows a design for a speaker inscribed in the square ABCD. Draw an enlarged design of the speaker in the given square ABCD in Fig. 2. Fig. 1 Fig. 2 5 Fig.1 shows the design of a helmet based on a semi-ellipse with an attached safety shield. The line PL is a tangent to the semi-ellipse at P. Locate the focal points of the semi-ellipse in Fig.2 and complete the design by drawing the tangent PL. P Fig. 1 Fig. 2 6 The elevation and plan of a garden seat are shown. Complete the given 3D sketch of the seat on the grid provided. Colour or shade the completed sketch. Section A - Page 3 of 6

4 7 The design of a sports trophy is shown. Write down the area of the trophy in square centimetres - cm 2. 1 square = 1 cm 2 Area of the trophy: cm 2. 8 Using the scale provided, measure and write down the dimensions A and B of the clothes stand shown. A: B: 9 The figure shows a set of blocks. Draw, in the space provided, an elevation of the blocks in the direction of the arrow. Section A - Page 4 of 6

5 10 The drawing shows the design of a light bulb. Show clearly all the points of contact between the arcs. 11 List the CAD commands used to produce the figures A to B and B to C. A B C Commands: A B B C 12 The graphic shows a small table lamp. Draw the shadow cast by the base of the lamp shown in Fig.1 when the direction of light is parallel to the arrow. Fig.1 Section A - Page 5 of 6

6 13 Fig.1 shows the design of a road sign based on a circle and a regular hexagon. Complete Fig. 2 to show the design of the road sign. Fig. 1 Fig The figure shows an incomplete perspective drawing of a toaster. A small 3D graphic of the toaster is also shown. Complete the perspective drawing. 15 The diagram shows a barrier at the entrance to a car park. Rotate the arm M in the direction of the arrow through 45º about the point P and complete the drawing of the arm in the rotated position. Section A - Page 6 of 6

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9 Coimisiún na Scrúduithe Stáit State Examinations Commission S60B Junior Certificate Examination, 2012 Technical Graphics Ordinary Level Section B (280 marks) Monday, 18 June Morning 9:30-12:00 Instructions (a) (b) (c) (d) Answer any four questions. All questions carry equal marks. The number of the question must be distinctly marked by the side of each answer. Work on one side of the answer paper only. Write your examination number on each sheet of paper used. Section B - Page 1 of 4

10 SECTION B. Answer any four questions. All questions carry equal marks. 1 The figure shows a design for a letterbox. Draw: (a) (b) (c) An elevation in the direction of arrow A. An end elevation in the direction of arrow B. Insert any four dimensions. Note: The back surface S is vertical as shown. 2 The figure shows the design of a logo for a locksmith. The curve ABC is a semi-ellipse. AC is the major axis, OB is half the minor axis and is 50 mm long as shown. Draw the given logo showing clearly all construction lines. Section B - Page 2 of 4

3 The figure shows a design for a cup-holder.

Draw: (a) (b) (c) An elevation in the direction of

The complete surface development of the cup-holder.

initials for the Forest Stewardship Council (FSC).

responsible management of the world s forests.

view of the initials or (b) An oblique view of the

11 3 The figure shows a design for a cup-holder. Also shown is a 3D graphic of the cup-holder. Draw: (a) (b) (c) An elevation in the direction of arrow A. A plan projected from the elevation. The complete surface development of the cup-holder. 4 The figure shows the elevation and plan of the initials for the Forest Stewardship Council (FSC). The Forest Stewardship Council promotes the responsible management of the world s forests. 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. Section B - Page 3 of 4

12 5 The given figure shows the design of a logo for a television channel - Channel 1. Also shown is a small 3D graphic of the logo. Draw the given logo and then locate the points A, A1, A2, A3 and O as shown. Find the image of the given logo under the following transformations: (a) From point A to A1 by an axial symmetry in the line A2-A3; (b) From point A1 to A2 by a translation; (c) From point A2 to A3 by a central symmetry in the point O. 6 The figure shows the design of a logo to indicate that an area is safe for swimming. Draw the semi-circle of radius 100 mm as shown and then complete the given logo. The line LM is a tangent to the circle from L. Show all construction lines, tangents and points of contact. Section B - Page 4 of 4

Technical Graphics Higher Level

Coimisiún na Scrúduithe Stáit State Examinations Commission Junior Certificate Examination 2005 Technical Graphics Higher Level Marking Scheme Sections A and B Section A Q1. 12 Four diagrams, 3 marks for