Mock exam paper C Higher Level Marking Scheme

Pre-Junior Certificate 2013

Technical Graphics

Higher Level

Marking Scheme

Sections A and B

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Section A – Answer any ten questions from this section.

Q1

4

A = Pentagon

4

B = Hexagon

4

C = Heptagon

Q2

6

Correct position of Barrier

6

Draw Hexagon

Q3

12

2 marks per correct line

Q4

6

6

Perpendicular height bisected

Complete rectangle

Q5

9

Sketch

3

Colour & Shade

Q6

5

5

2

Elevation

End View

Hidden Detail

Q7

4

Mirror

4

Erase

4

Offset

Q8

6

6

Correct construction

Five equal spaces

Q9

6

6

Correct construction lines

Completed axial symmetry

Q10

4

6

2

Square or Circle construction

Completed Hexagon

All sides equal

Q11

12

14 Block (6 Marks if answered 13-15 blocks)

Q12

4

4

4

30 degrees

30 degrees

60 degrees

Q13

4

4

4

Correct projection lines at 90degs to X1Y1

Correct Heights from Elevation

Complete Auxiliary View

Q14

4

8

Find Focal Points

Locate Tangent Point

Q15

12

Chart completed correctly (-2 per mistake)

Section B – Answer any four questions from this section.

Q.1 – Orthographic Projection

Elevation (18)

8

10

Main Body

Ellipse

Plan (15)

8

4

3

Main Body

Width

Quadrant

End View (19)

6

8

5

Main Body

Sloping surface

Completed View

True Shape (8)

8

Rebatment of Surface S

10

Drafting, accuracy, presentation

Total Marks 70

Q.2 – Rotation

Given Elevation (18)

5

5

3

5

Outline

Circle

Handle

Symmetry

Given Plan (6)

2

4

Horizontal line

30 degree line

New Figure (36)

3

3

3

3

14

5

5

Project points to plan

Rotate points to end view

Project from elevation to end elevation

Outline

Circle

Door Detail

Symmetry

10

Drafting, accuracy, presentation

Total Marks 70

Q.3 (a) – Axonometric Method

Plan (12)

5

5

2

Outline

Jaws & parallel lines (5 Lines)

Symmetry

Elevation (16)

4

6

2

4

Circle

Arc

Sloping Surface

Outline

Completed Isometric Projection (34)

6

6

10

8

4

Base

Front Sloping Surface

Circle

Arc

Complete

10

Drafting, accuracy, presentation

Total Marks 70

Q.3 (b) – Isometric Scale Method

Isometric scale (12)

4

4

4

Set up scale

Apply dimensions to 45 degree line

Project from forty five degree line to 30 degree line

Axis (6)

6

For each correct line (2,2,2)

Isomeric projection (42)

6

8

12

10

6

Base

Fr...

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