6005q01

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ZIMBABWE SCHOOL EXAMINATIONS COUNCIL

General Certificate of Education Advanced Level

DESIGN AND TECHNOLOGY 6005/1

PAPER 1 Design and Technology Theory
SPECIMEN PAPER 3 hours
Additional materials: A2 Drawing papers (4 sheets),
Standard Drawing Equipment,
Separate answer sheets.

TIME 3 hours

INSTRUCTIONS TO CANDIDATES
Print your name, centre number and candidate number on every sheet of paper you use.

Answer all questions in Section A and one question in Section B and Section C is

compulsory.
Work out all your answers in SI units. Use both sides of the drawing paper.

All solutions are to be drawn full size unless a contrary instruction is given. Construction
lines must be shown clearly.

Measurements not given are left to your discretion.

If you use more than one sheet of paper, fasten the sheets together.

INFORMATION FOR CANDIDATES

The number of marks is given in brackets [ ] at the end of each question or part question.
[he diagrams are not necessarily drawn to scale.

All dimensions are in millimetres unless otherwise stated.

Y ou are reminded of the need for clear presentation in your answers.

This question paper consists of 8 printed pages.
Copyright: Zimbabwe School Examinations Council, Specimen paper.

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SECTIONA

Answer all questions in this section. Each question carries 10 marks.

You are advised to spend 45 minutes in this section.

A local company is producing industrial chemical waste from its paint

manufacturing plant and draining it into a nearby stream.
(a) _ Describe any environmentally friendly way of disposing:
@ solvents,

di paint soaked rugs and towels.

(b) Describe dangers associated with draining waste into streams to:

@ humans,

di the environment.

(©) Propose a method of ensuring that the company stops drawing

waste into the stream.

The roof truss is a common but efficient way of transmitting loads in
buildings. Trusses can be made from any suitable material.

(a) Make a sketch of a roof truss for a span of 10 metres and label any

three parts.

(b) Explain how the members of the structure transmit forces in
relation to the parts.

(c) Name the material used in making the roof truss and give a reason for

choosing this material.

Transmission of motion can be made using gears, belts and pulleys
or chain and sprockets.

(a) @ Give one example of the application for each of the transmission

methods.

di State three advantages of chains over belt drivers.

(b) Name the material used in the manufacture of: @ belts,
di pulleys,

(iii) chains,

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4

(iv) sprockets. [4]

Describe, stage by stage, the necessary steps to be followed in the correct
patenting procedures for intellectual property rights.

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SECTION B You are advised to spend 45 minutes in this section. Answer only one question from this section on the answer sheets provided. Each question carried 20 marks.

(a) A cubic metre of mukwa costs $4,000 at the sawmill.

Calculate the cost of the piece shown in Figure 1. The piece is
from the same material quoted above. [6]

50mm

goo
Ya,
Figure 1

(b) @ Describe physical characteristics of hardwood. 3]

di Describe and explain the reasons for natural and kiln
seasoning. 6]
(ii) © Whatis meant by the term warping? 2]
(iv) Describe the use of veneer. 1]

(v) Describe the general nature and give one typical application
for softwood. 2]
[10]

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6 Figure 2 shows orthographic views of a toolmaker’s clamp.

Fig. 2

Draw, to ascale of 2:1, an isometric drawing of the toolmaker’s clamp. [20]

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The diagram in Figure 3 shows two shafts A and B. Shaft A is expected to

turn shaft B.
‘ZS SHAFT A
\\
SHAFT B
Figure 3

(a) Suggest a suitable type of gears that can be used to transmit

motion from shaft A to shaft B.
(b) Identify any other three methods that can be used to transmit motion.
() For the three methods identified in (b), give an example of a situation

where it can be applied.
(d) ‘If shaft A is rotating at a speed of 100 r.p.m. and shaft B is required to

rotate at 200 r.p.m. Calculate the: (i) gear ratio

di number of teeth

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SECTION C This question is compulsory. You are advised to spend 1 hour 30 minutes in this section. Answer the question on the A2 drawing paper provided. Y ou should approach the design question in the following manner:

Analysis:
Produce an analysis of the given situation/problem, which may be in written
or graphic form.

Specification:

From the analysis produce a detailed written specification of the design
requirements. Include at least three specification points other than those given
in the question.

Development:

Show using bold sketches and notes, the development, reasoning and
composition of ideas into a single design proposal. Give details of materials,
constructional and other relevant technical skills.

Proposed Solution:
Produce drawings of an appropriate kind to show the complete solution.

Evaluation:
Give a written evaluation of the final design solution.

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Many students use bicycles to go to school but at times their bicycles are not safe since there is nowhere to lock them on arrival at school.

Design a locking rack to accommodate two bicycles. The rack should include at least two
mechanisms and application of electronics.

(a) _List any three points that you consider important about the functions

of your device. [3]

(b) Using notes and sketches generate sketches of two possible solutions
f locking the bicycles to the rack [10]

fo}

() Using notes and sketches develop the chosen solution and state the
reasons for each material chosen. [5]

@ Produce a sectional front and end elevation in first or third angle

projection which shows all of the features that you have designed. [22]

[40]

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