Kenya Certificate Of Secondary Education(KCSE 2013) Draw and Design Paper 1 with Marking Scheme

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SECTION A (50 marks)
Answer all the questions in this section on the answer sheet provided.

  1.    
    1. List four characteristics of a good technical drawing paper. (2 marks)
    2. Given that paper size A4 is 210 x 297. Determine the sizes of the following paper sizes
      1. A0;
      2. A3. (2 marks)
    3. State two precautions in handling a T-square. (2 marks)
  2.    
    1. List six computer programmes that can be used to produce a drawing. (3 marks)
    2. Define the term “mock-up” and state its purpose in the design process. (2 marks)
  3. Name the three groups of metals and give one example in each group.
  4.    
    1. Figure 1 is drawn to scale of 1:2. (3 marks)
      1
      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)
  5. Define the following terms as applied to business enterprises:
    1. fixed assets;
    2. deficit;
    3. liability. (3 marks)
  6. Figure 2 shows two views of two parts of a machine component drawn in first angle projections. Sketch the assembled parts in oblique projection. (6 marks)
    2
  7. Figure 3 shows the front elevation and an incomplete plan of a truncated square-based pyramid:
    1. complete the plan;
    2. draw the true shape of the cut face. (5 marks)
      3
  8. Draw the locus of the end of a string when it is unwound from a 30 mm square prism for one complete revolution. (6 marks)
  9. Figure 4 shows a block drawn in first angle projection. Sketch the block in oblique taking AB as the lowest edge. (4 marks)
    4
  10. Figure 5 shows an isometric block. Sketch three views of the block in first angle orthographic projection. (6 marks)
    5

SECTION B (20 marks)
This question is compulsory. Candidates are advised to spend not more than one hour on this question.

  1. 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 dimensions are left to the candidates discretion. Hidden details are not required.
      (Use the A3 paper provided). (20 marks)
      6

SECTION C (30 marks)
Answer any two questions from this section.

  1. Figure 7 shows the front elevation and an incomplete plan of a truncated hexagonal prism.
    1. copy the views and complete the plan;
    2. draw the surface development of the prism (omit the flaps). (15 marks)
      7
  2. Figure 8 shows an inclined plan of a block and its front elevation.
    8
    Copy the given layout and draw the two point perspective of the block showing all construction details. (15 marks)
  3. Figure 9 shows two intersecting square tubes A and B drawn in 1st angle projection.
    9
    1. copy the figure and complete:
      1. the front elevation
      2. the plan.
    2. Draw the development of tube B.


MARKING SCHEME

  1.    
    1.    
      • Size should be standard
      • White colour / good colour for contract / colour
      • Texture/good quality
      • Paper gauge/thickness
      • Ink must not run on it/ blooting factor
      • The edges should be perpendicular to each other
      • AO - 1188 x 840
    2.    
      1. A3 - 420 x 297
        2 x 1 = 2 marks
      2. maintain right angle between blade and stock
    3.    
      • maintain straightness of blade edge
      • store such that the blade is in a vertical position
      • avoid dropping or storing in direct sunlight
      • Only use it for the intended purpose
        any 2 x 1 = 2 marks
  2.    
    1.    
      • word processing
      • draw plus
      • corel draw
      • sketch up
      • Archi-CAD
      • punch card
      • Auto-CAD
      • Inviscape
      • Paint
      • Real draw
      • Mat lab
      • Auto desk
    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 weather 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)
  3.    
    • Ferrous e.g steel
    • Nonferrous e.g copper, level, aluminium, silver, gold
    • Alloys eg. brass, bronze solder
      Naming 3 x 21 = 1 21
      Examples 3 x 21 = 1 21
      3 marks
  4.    
    1.    
      1. A = 45 x 2 = 90
      2. Angle = 25º
        1. Measuring - 1
          Tabulation - 1
        2. Angle - 1
          (3 marks)
          10
  5.    
    1. Fixed assets are properties e.g buildings, machines, and other equipment or facilities that have monetary value. 1 mark
    2. Deficit is the amount by which expenditure is greater than income. 1 mark
    3. Liabilities is financial obligation 1 mark
  6.  
    11
  7.  
    12  
  8.    
    13 
  9.    
    14
  10.    
    15
  11.  
    16 
  12.     
    17
  13.    
    18
    19
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