Drawing and Design P1 Questions - Wisdom Pre-Mock Form 4 Exams 2021/2022

INSTRUCTION TO CANDIDATES

• You should have the following for this examination;
• Drawing instruments
• Drawing paper size A3
• Write your name and index number in the spaces provided
• This paper consists of three sections A, B and C
• Answer All the questions in sections A and B and any TWO questions from section C
• Questions from section A must be answered in the provided answer sheets
• Questions in section B and C should be answered on the A3 drawing paper provided
• All dimensions are in milimetres unless otherwise stated
• Candidates may be penalized for not following the instructions given in this paper

FOR EXAMINERS USE ONLY

QUESTIONS

SECTION A (50 Marks)
Answer all the questions in this section

1. Define the term:
   1. Designer (1 mark)
   2. State two reasons of using different types of lines in engineering drawing (2 marks)
2. Define each of the following properties of materials: (2 marks)
   1. Plasticity……………………………………………………………………………………
   2. Tensile strength ……………………………………………………………………………………
3.                  
   1. State the two major method of timber conversion (2 marks)
   2. State two effects of poor disposal of engineering materials to the environment (2 marks)
4. State three advantages for drawing sectional views in drawing (3 marks)
5. Explain three advantages of using computer in drawing (3 marks)
6. Using a circle of radius 20mm, show the following; (3 marks)
   1. Sector
   2. Segment
   3. Chord
   4. Quadrant
   5. Circumference
   6. Tangent
7. Figure below shows two views of a block drawn in third angle projection Sketch in good proportion the isometric view of the block taking X as the lowest point (4 marks)
   
8.                        
   1. Give two real practical application of the intersection of surfaces or interpenetration of solids (2 marks)
   2. Explain briefly three major areas to be considered in design (3 marks)
9.                      
   1. List three characteristics of a good technical drawing paper (3 marks)
   2. Outline four main steps involved in design process (4 marks)
10. Define the term: (1 marks)
    1. Loci
    2. State two important points considered before attempting to construct any locus (2 marks)
11. Sketch in first angle projection the orthographic views of the block shown below (6 marks)
    
12.                    
    1. State three factors considered when lettering (3 marks)
    2. Construct a diagonal in which 30mm represents 1m, of 5 metres long to read 10mm Mark off a distance of 3M 670mm Show all your working clearly (4 marks)

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

13. The figure below shows parts of a machine component drawing in first angle projection
    Assemble the parts and, FULL SIZE, the following:
    1. The sectional front elevation along the cutting plane B-B
    2. The plan
    3. The end elevation
       Insert six leading dimensions and part list Unspecified dimensions are left to the candidate’s discretion Hidden details may be included where necessary (20 marks)
       

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

14. The figure below shows the front elevation of a regular solid hexagonal pyramid of side 35mm which has been cut by planes X-X and Y-Y Copy the figure and Draw the following: (15 marks)
    1. The sectional plan
    2. The end elevation in the direction of arrow E
    3. The true shape of the section X-X
    4. The auxiliary view
       
15. The figure below shows the incomplete front and end elevation of two dissimilar off-setted squared pipe meeting at right angle Using the dimension given, show line of interpenetration and then draw in first angle orthographic projection the following views:
    1. The complete front elevation
    2. A full plan;
    3. An end elevation;
    4. A full development of the smaller pipe (15 marks)
       
16. Orthographic views of machine part in third angle projection are shown below Draw an isometric view TWICE FULL SIZE SCALE clearly showing all the features of the components taking X as the lowest point (Include at least six main dimensions, hidden details may be shown where necessary (15 marks)