DRAWING AND DESIGN PAPER 1 - KCSE 2019 JOINT PRE MOCK EXAMINATION NAMBALE

1.  
   1. Give the following information regarding parastatal organizations in Kenya with respect to:
      1. Ownership;   (1 mark)
      2. Management;     (1 mark)
      3. Services;         (1 mark)
   2. Describe four main steps involved in design process                                                      ( 4 marks)

2.  
   1.  
      1. State one reason for using different types of lines in drawing                                   (1 mark)
      2. Explain one use of each of the following lines 
                                                                             
   2. Outline six advantages of using computers in drawing                                                    (3 marks)

3.  
   1. State one disadvantage of using each of the following items to hold paper on the drawing board
      1. Masking tape                    (1 mark)
      2. Thumb plans                    (1 mark)
   2. Describe each of the following manufactured boards
      1. Plywood                      (1 mark)
      2. Chip board                  (1 mark)
      3. Block board              ( 1 mark)

4. Figure 1 shows a template drawn full size
   
   Measure and dimension the hole and angle of the slanting face                                             (2 marks)

5. Figure 2 shows a pictorial view of a block.
   
   Using third angle projection, sketch in good proportion the orthographic views of the block (6 marks)

6. Figure 3 shows two of a block drawn in first angle projection. In good proportionality sketch the block in oblique projection  (6 marks)
   

7. Construct an internal common tangent to the circles given in figure 4   (7 marks)
   

8. The following lines were drawn using different scales
   
   Deternine the distance represented by each line using the given scale (3 marks)
   1. Line AB if the scale used is 1:2
   2. Line CD if the scale used is 2:1

9. A right square pyramid is truncated along X-X and Y-Y as shown in figure 5
   
   Complete the plan     (4 marks)

10. Figure 6 shows two views of a shaped block drawn in first angle projection. Sketch the third view by projecting from the given views     ( 5 marks)
    

SECTION B (20 marks)
This question is compulsory

11. Figure 7 shows parts of a machined component drawn in first angle projection. Assemble the parts and draw the following:
    
    
    1. A sectional front elevation through the cutting plane F-F
    2. The plan           (15 marks)

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

12. Figure 8 the three orthographic views of a machined block drawn in first angle projection. Draw full size the isometric view of the block taking corner X as the lowest point    (15 marks)
    

13. In the mechanism shown in figure 9 , the crank EF rotates about centre E while GH oscillates about G
    
    Plot the locus of point P for one revolution of EF        (15 marks)

14. Figure 10 shows a branch pipe A connected to a conical shaped base of a chimney B 
                                    
    Draw the curves of interpretation between the pipe and the conical base in:          
    1. Plan
    2. Elevation