Drawing and Design Paper 1 Questions and Answers - Lainaku 1 Joint PreMock Exams 2023

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Drawing and Design Paper 2 Questions and Answers - Lainaku 1 Joint PreMock Exams 2023

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INSTRUCTIONS TO CANDIDATES

You should have the following for this examination
1. 4sheets of drawing paper size A3
2. Drawing instruments
3. This paper has section A,B and C
4. Candidates are advised not to spend more than one hour on section B

SECTION A (50 Marks)

Answer all questions in this section on the answer sheer provided

1. List four characteristics of a good drawing paper (2marks)
2. Given that paper size A₄ is 210 x 297. Determine the sizes of the following paper sizes.
  1. A₀;
  2. A₃ (2marks)
3. State two precautions in handling a T-square (2marks)
1. List six computer programmes that can be used to produce a drawing (3marks)
2. Define the term ''mock -up'' and state its purpose in the design process. (2marks)
Name the three groups of metal and give one example in each group.
1. Figure 1 is drwan to scale of 1:2
  
  Determine:
  1. Distance A;
  2. The angle of the slanting face (3 marks)
2. Sketch to show how the diameters of eccentric circles on a solid piece can be dimensioned (3 marks)
Define the following terms as applied to business enterprises:
1. Fixed assests;
2. Deficit
3. Liability (3marks)
Figure 2 shows two views of two parts of a machine component drwn in first angle projections. Sketch the assembled parts in oblique projection. (6 marks)
Figure 3 shows the front elevation and an incomplete plan of a truncated square-based pyramid:
1. Complete the plan
2. Draw the true shaape of the cut. (5 marks)
Draw the locus of the end of a string when it is unwound from a 30mm square prism for one complete revolution. (6 marks)
Figure 4 shows a block drawn in first angle projection. Sketch the block in oblique taking AB as the lowest edge. (4 marks)
Figure 5 shows an isometric block. Sketch three views of the block in first angle orthographic projection. (6 marks)

SECTION B (20 MARKS)
This question is compulsory. Candidates are advised to spend not more than one hour on thid question
Figure 6 shows parts of a mechanical component drawn in first angle projection. Assemble the parts and draw FULL SIZE, the following;
1. Sectional front elevation along the cutting plane P-P;
2. End elevation
3. Insert three leading dimensions
  Unspecified diensions are left to the candidates discretion. Hidden details are not required.
  (Use the A3 paper provided) (20 marks)
  
  SECTION C ( 30 MARKS)
  Answer ant two questions from this section
Figure 7 shows the front elevation and an incomplete plan of a truncated haxagonal prism.
1. Copy the views and complete the plan;
2. Draw the surface development of the prism (omit the flaps). (15 MARKS)
Figure 8 shows an incline plan of a block and its front elevation.

Copt the give layout and draw the two point perspective of the block showing all construction details. (15 Marks)
Figure 9 shows the intersecting square tubes A and B drawn in 1^st angle projection.
1. Copy the figure and complete:
  1. The front elevation
  2. The plan
2. Draw the development of tube B.

MARKING SCHEME

1. - Size should be standard
  - White color/good color for contract/colour
  - Texture/good quality
  - Paper guage/thickness
  - Ink must not run on it/Blooting factor
  - The edges shoul be perpendicular to each other any 4 x ½ = (2 marks)
2. 1. A₀ - 1188 X 840
  2. A₃ - 420 X 297 2 x 1 = 2 marks
3. - Maintain right angle between blade and stock
  - Maintain straightness of blade edge
  - Store such that the blade is in a verticle position
  - Avoid dropping or storing in direct sunlight
  - Only use it for the intended pur[ose any 2 x 1 = 2 marks
1. - word processing - draw plus
  - corel draw - sketch up
  - Archi-CAD - punch card
  - Archi-CAD - inviscape
  - Paint - Real draw
  - Mat lab - Auto desk
  - Adobe any 6 x ½ = 3 marks
2. Definition
  - Mock-up is a scale model of the finished work made in any suitable material.
    Purpose - Mock-up is made and tested to find out whether or not the design is satisfactory.
  - Imperfection not seen when drawing may show up clearly in a mock-up
    Definition - 1
    Purpose - 1 2 marks
- Ferrous e.g steel
- Nonferrous e.g copper, level, aluminium, silver, gold
- Alloys e.g brass, bronze solder
  Naming 3 x ½ = 1½
- Examples 3 x ½ = 1½ 3 marks
1. 1. A = 42 x 2 = 90
  2. Angle = 25°
    1. Measuring - 1
      Tabulation - 1
    2. Angle - 1 3 marks
1. Fixe assets are properties e.g buildings, machines, and any other equipmwnt or facilities that have monetary values. 1 mark
2. Deficit is the amunt by which the expenditure is greater than income. 1 mark
3. Liabilities is financial obligation 1 mark