KCSE 2014 Drawing & Design Paper 1 Questions with Marking Scheme

QUESTIONS

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

1.                      
   1. Write the following in full as applied in industrial training:
      1. TVET;
      2. NITA;
      3. TT.I.(3 marks)
   2. State two uses of a beam compass.(1 mark)
2.                        
   1. Define the following terms as used in the design process:(4 marks)
      1. primary objective;
      2. secondary objective;
      3. design brief;
      4. prototype.
   2. With the aid of sketches, describe three types of dimensions in technical drawing.(3 marks)
3. State one use of each of the following computer components:(2 marks)
   1. keyboard;
   2. mouse;
   3. monitor;
   4. hard disk.
4. Construct a triangle of perimeter 165 mm whose sides are in the ratio of 3:5:6.(4 marks)
5.                        
   1. List four factors to consider when lettering.(2 marks)
   2. State three effects of poor disposal of engineering materials to the environment.(3 marks)
6. Figure 1 shows a block drawn in isometric projection. Sketch in good proportion the orthographic views of the block in first angle projection.(7 marks)
   
7. Figure 2 shows three views of a block drawn in third angle projection
   
   On the isometric grid paper provided, sketch the pictorial view of the block taking "Y" as the lowest point.(6 marks)
8. Construct a scale of 10:9 and draw figure 3 using the scale.(5 marks)
   
9. An equilateral triangular prism is intersected by a cylinder at right angles as shown in figure 4.
   
   Draw the line of intersection.(5 marks)
10. Figure 5 shows views of two parts of a block drawn in first angle projection.
    
    Assemble the parts and sketch in good proportion the oblique projection of the block.(5 marks)

SECTION B (20 marks)
COMPULSORY QUESTION.

11. Figure 6 shows parts of a machine 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. the plan;
       Hidden details are not required. Unspecified dimensions are left to the candidate's discretion.(20 marks)
       

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

12. Figure 7 shows the front elevation of a truncated hexagonal prism tilting at an angle of 30°. Copy the given view and draw the following in third angle projection:
    1. end elevation in the direction of arrow E;
    2. the plan.(15 marks)
       
13. Figure 8 shows the plan of an object. A string attached to its circumference is wound tight. Trace the path followed by a mark P on the string as it unwinds through one revolution.(15 marks)
    
14. Figure 9 shows a block drawn in isometric projection.
    
    Draw FULL SIZE in first angle projection the three orthographic views of the block.(15 marks)

MARKING SCHEME

1.                      
   1. TIVET - Technical Vocational Education Training.
      NITA - National Industrial Training Authority.
      TTI - Technical Training Institute.
      (3 x 1 = 3 marks)
   2. Uses of a beam compass:
      • Drawing circles and arcs of very large radii.
      • Stepping off large distances. (2 x 1 = 2 marks)
2.                                
   1. Terms in the design process:
      • Primary objective is the functionality of a design solution or a workable solution.
      • Secondary objective refers to value addition, eg. comfort, aesthetics etc.
      • Design brief refers to the narration of the problem solution.
      • Prototype is the model or sample of the finished product.
        (4 x 1 = 4 marks)
   2. Types of dimensions
      
      (3 x 1 = 3 marks) 
3.                                
   1. Uses of:
      • Key board - for typing/keying in information and giving commands.
      • Mouse - For giving commands.
      • Monitor - To display whatever is going on or taking place in the computer.
      • Hard disk - For storage of information i.e. primary storage media. (4 x ¹/₂ = 2 marks)
4.                                  
   
   Drawing and measuring 165mm = ¹/₂
   dividing the line into 14 equal parts = 1 
   determining 3, 5 & 6 = 14 = ¹/₂
   identify 3,5,6 portions = 1¹/₂
   joining the points = ¹/₂
                              4 marks
5.                      
   1. Factors to consider when lettering:
      • Use of guidelines to give uniformity.
      • Proportional and equal spacing of letters and numerical.
      • Uniform strength/outline of letters and numerical.
      • Consistency in style i.e. italic or gothic.
      • Ascending and descending for lower case letters.
      • Proportionality with the paper size.
        (Any 4 x 21 = 2 marks)
   2. Effects of poor disposal of eng. materials.
      • Global warming.
      • Harmful to the soil.
      • Harmful to the aquatic life.
      • Unsightly environment.
        (Any 3 x 1 = 3 marks)
6.                      
    
7.                                                                                         
   
8.                                                                    
   
9.                                                       
   
   Front Elevation
   Construction of circle or semi-circle 1 mark
   Correct projection to the prism ¹/₂ mark
   Plotting the points on the prism 1 mark
   Smooth curve 1 mark
   3 ¹/₂ marks
   Plan
   Construction of circle or semi-circle 1 mark
   Correct projection the prism ¹/₂ mark
   1 ¹/₂ marks
   Total 5 marks
10.                                
    
    5 faces @ ¹/₂ =  2¹/₂
    oblique = 1
    proportionality = ¹/₂
    = 4 marks
    Accept alternative direction viewing
11.                                              
    
12.                                                
    
13.                                                
    
14.