Instructions to candidates
- You should have following for this examination:
4 sheets of drawing paper size A3;
Drawing instruments; - This paper has ONE COMPULSORY question.
- This paper is to be issued to the candidates 30 minutes before the examination starts.
- Candidates are advised to spend this time understanding the design problem and planning the work on one of the drawing papers printed.
- This paper consists of 2 printed pages.
- Candidates should check the question paper to ascertain that both pages are printed as indicated and that no questions are missing.
- Candidates should answer the questions in English.
QUESTIONS
DESIGN PROBLEM (40 Marks)
In our homes, there is always a problem of sorting out dirty clothes before cleaning them. Different clothes should be put and washed in different batches. Design a temporary storage device to be used in sorting different types of cloths before washing them. Design the device considering the following:
- The device should have different compartments to hold the different types of cloths.
- It should easily be moved from one position to another.
- The top should be used for ironing clothes on.
- It can be adjusted to the desired height for ease during ironing of clothes.
- It should have a suitable breaking system.
REQUIREMENTS
- Make free hand sketches of two possible solutions for your design. (6 marks)
- Select one of the designs in (a) above and make a refined labeled pictorial sketch.(14 marks)
- Make detailed sketches of the mechanisms to allow for each of the considerations 1-5 above.(15 marks)
- List two materials to be used and state one reason for the choice of each in the design.(2 marks)
- State three methods of joining the parts and state where each is used. (3 marks)
MARKING SCHEME
- Two possible (functional) designs x3 = 6mks
One functional sketch award 3 out of 6 marks
If no sketch seen award 0 out of 6 marks - Pictorial design (sketch) of selected device having different compartments
Allocation to be based on- Selected design from above 1 mark
- Appropriateness of design 2 marks
- Different compartments 3 marks
- Easy movement from one position to another 2 marks
- Top to be used for ironing 2 marks
- Height adjustment 3 narks
- Breaking system 1 mark
- Workable details of mechanism sketched to allow
- Different compartments 3 marks
- Easy movement from one position to another 3 marks
- Top to be used for ironing 3 marks
- Height adjustment 4 narks
- Breaking system 1 mark
- The emphasize should base on Clear detailed sketches showing the working of the mechanism
- At least 2 materials used
- Reason for choice of each material correct
3x1 = 3mks
- Reason for choice of each material correct
- Method used for joining various parts at least two and stating where each joint is applied 3x 1= 3 marks
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