MID-YEAR EXAMINATION 1999

SECONDARY TWO EXPRESS

DESIGN AND TECHNOLOGY

 

Name : Time : 1hour 30 minutes               
Class : Marks : /100

INSTRUCTIONS TO CANDIDATES

This paper consists of three sections.

You should write your answers to Questions 1 to 7 in the spaces provided.

Question 8(a) should be done in the isometric grid paper and Question 8(b) in the square grid paper.

You are advised to spend not more than

20 minutes on Section A

20 minutes on Section B

50 minutes on Section C.

This paper consists of 8 printed pages.

Section A (30 marks)

You are advised to spend not more than 20 minutes on this part.

Attempt all questions.

1. Name the following tools and state their uses:

Name of tool : (1)

Use of tool:

                  (1)

Name of tool : (1)

Use of tool:

                  (1)

 

Name of tool : (1)

Use of tool:

                  (1)

 

Name of tool : (1)

Use of tool:

                  (1)

2. Fill in the blanks with suitable words.

a. Metals can combine with other metals or elements to form. (1)

b. Stainless steel is used for making cutlery and kitchen utensils because the material is (1)

c. The main reason for using phenolic to make electric fittings is because . (1)

d. GRP is very suitable for making outdoor structures such as bus-stop shelter and play ground equipment because it is . (1)

e. Seasoning is the process of removing excess from freshly-cut timber. (1)

f. When zinc is exposed to air, a layer of oxide is formed. This oxide protects the metal from. (1)

3. Suggest a suitable material for making each of the following products: (6 marks)

e.g. raffia                                                polypropylene

a. telephone casing                                  (1)

b. HDB letter boxes                                (1)

c. musical instruments                              (1)

d. plaques                                               (1)

e. twist drills                                            (1)

f. fishing weights                                      (1)

4. Answer the following questions in complete sentences.

a. Explain why templates are sometimes used in marking out. (2)

b. What tools are used to cut large holes in wood? (Name the cutting tools and the tool that is used to hold the cutting tools). What is this process called? (4)

c. Name the tool that is used to cut straight and external curved edges of a sheet metal.(1)

d. Why do you use a mallet and not a hammer to bend sheet metal? (1)

e. Why is it not advisable to buff a small work piece on the buffing machine? (1)

f. Explain why it is sometimes necessary to heat up a metal workpiece before bending is carried out. (1)

Section B (20 marks)

You are advised to spend not more than 20 minutes on this part.

Attempt all questions.

Answer the following questions in complete sentences

5. Describe how you would make an acrylic fluted dish by filling in the blanks under the four steps given below:

Step 1 : Marking out - Describe how you would mark out on the acrylic.Name the tools used. (2)

Step 2 : Cutting and Shaping - Describe how you would cut and shape the acrylic. Name the tools used. (3)

Step 3 : Finishing - Describe how you would finish.Name the tools and equipment used. (3)

Step 4 : Thermoforming - Describe how you would thermoform and shape the acrylic.

6. The steps in joining two metal parts are shown below.

Fill in the blanks to describe how the two metal parts are joined together. (10)

1.

   		2.

  
3.

   		4.

  

 

Section C (50 marks)

7. You have been asked to design a small wooden first-aid box.

a. State two factors you would consider when designing the first-aid box. (2)

b. What type of wood would you use to make the first-aid box? (2)

c. Give one reason for your choice of wood. (2)

d. Suggest two types of joints you would use to assemble the parts. (4)

e. In the space provided, sketch a 3-dimensional view of the first-aid box. (5) Show clearly the joints that you have chosen.

 

 

 

 

8. The figure shows a geometrical solid.

a. Draw an isometric view of the solid on the isometric grid paper. (15 )

b. On the square grid paper, draw the Front Elevation, End Elevation and

Plan of the solid as viewed from the direction of the arrows. (20)

All dimensions are in millimetres. Do not dimension your drawings.

 

END-OF-PAPER

 


Answers