Note to student: -------------------- · a. Write down the type of motion performed by the...

Design & Technology – Year 9 – 2017 of 14

DIRECTORATE FOR QUALITY AND STANDARDS IN EDUCATION

Curriculum Management and eLearning Department

Educational Assessment Unit

Annual Examinations 2017

YEAR 9 DESIGN & TECHNOLOGY TIME: 2 hours

Name: _____________________________________ Class: _______________

___________________________________________________________

------------------------------------ Note to student: ------------------------------

You are required to answer all questions.

Non-Programmable calculators are allowed.

Geometry drawing instruments are required.

Useful Formulae:

Moment of force = F×D

---------------------------------------------------------------------------------------- _______________________________________________________________________

FOR TEACHERS' USE ONLY DISTRIBUTION OF MARKS

Enter student’s mark obtained in every section in the above table. Core D&T is based on all the subject aspects; Design covers the Design aspect, and Technology covers Materials (20-

25), Systems & Control (25-30) and Graphics (5-10), within the Technology aspect of D&T.

_______________________________________________________________________

RIV

Areas corrected Marks

for

Written

Exam.

Marks

for

Design

Folio

TOTAL FINAL

MARK

Core

D&T Design Technology

Max.

Marks 20 25 55 100 100 200 %

Student’s

mark

of 14 Design & Technology – Year 9 – 2017

SECTION A: Core D&T (20 marks)

1. Identify and underline TWO keywords in this Design Brief:

Design and make a product that helps users to display their collection of marathon medals.

1 mark

2. Natural woods are classified under two types. Mention both of them:

_________________________ and ___________________________ 1 mark

3. Mention ONE example of a non ferrous metal that is also very light in weight:

___________________________________ 1 mark

4. Give ONE reason why sketching and modelling are used in the design process.

____________________________________________________________________ 1 mark

5. Mild steel and Cast iron are called ferrous metals, what do all ferrous metals contain?

___________________________________ 1 mark

6. Complete the table below by writing down the Names, Use or a sketch of the given tools:

Picture Name Use

Hack saw To cut metal straight

Chisel To carve and cut wood

3 marks

7. Plastic may be bent neatly along a straight line with a special electric machine. What is the

name of this machine?

_______________________________________________________ 1 mark

8. Copper is a malleable and ductile metal, give TWO examples where it can be used.

___________________________ and ___________________________ . 1 mark


9. From the given information, sketch the weave in the space below:

1 mark

10. Mention a product that needs to be made with a weaved textile and state ONE reason:

_____________________ Reason: ____________________________________________

2 marks

11. Underline which of the following components controls the current in a circuit?

Capacitor, Resistor, Bulb

1 mark

12. Mention the type of movement produced by a follower in a cam and follower mechanism:

_______________________________________________________ 1 mark

13. Define what PCB stands for.

P_______________ C_______________ B_______________ 1 mark

14. Complete the following table:

Component Symbol Function

It provides electric direct current when the circuit is

switched on.

Transistor

Allows current flow when high potential at base.

Diode

Current will flow through this device only if positive

voltage is applied to the anode and negative to the

cathode.

A component which has the ability to store energy in

the form of electric charge.

4 marks

Plain Weave

The warp and weft yarns pass

under each other alternately.


SECTION B: Design Aspect (25 marks)

Please read the following Design Situation: (Refer to this throughout Section B and C)

1. Complete the following sentences to write a Design Brief for the above situation.

Design and make ______________________________________________________________

_____________________________________________________________________________

This product must be suitable for _________________________________________________.

2 marks

2. From where can you research information to design such an artefact?

_______________________________________________________ 1 mark

3. Write THREE Specifications that you consider to be important to solve the problem. These

should state exactly what the design should achieve, not how the problem is going to be solved.

Specifications

3 marks

4. Sketch TWO innovative ideas for the artefact adding notes to explain your designs and state the

material that is going to be used. It has to be aesthetically appealing for teenagers and outdoor

lovers. Any additional features are encouraged.

A company specialising in camping equipment

has researched different difficulties that campers come

across and decided to tackle some of these problems.

In windy weather things such as bottles and glasses

may easily be blown away from the table.

As a designer you are asked to design an innovative

artefact to hold a bottle of water and a few glasses on

the table without being blown away.


8 marks

IDEA 1

IDEA 2


5. Write a set of FOUR questions you would give your friends or other users to help you make a

good evaluation of the product.

4 marks

6. Lighting a fire is also dangerous in windy weather so a designer is designing a battery operated

container that can reheat a single portion of food up to 72o C. An output device must be

included to indicate that the temperature has been reached.

a) This diagram helps the designer to consider points for his design. For example

‘Equipment’ reminds you to consider that a soldering iron might be used. Complete the diagram

to explore the design of the container.

6 marks

b) What is such diagram called?

_______________________________________ 1 mark

Colour

combination

s

Branding

Plastic

Electronic

Equipment

needed

Market

Soldering

iron

Health and

Safety


SECTION C: Technology Aspect (55 marks)

1. Figure A shows the casing of a hand-powered torch which could be used during camping

activities.

a. The following is a list of subsystems involved in the torch.

▪ lighting unit ▪ electric power generation unit

▪ hand-crank ▪ electronic control system ▪ gearing system

Identify the subsystem which is responsible for the:

INPUT: ____________________ OUTPUT: ___________________

2 marks

b. Using the remaining subsystems, complete the following diagram to show the processing

sequence.

3 marks

INPUT OUTPUT

lighting unit

torch handle

Hand-crank

handle

shaft

Figure A: Hand-powered torch


2. The distance between the shaft and the handle of the hand-crank is 100mm.

a. Write down the type of motion performed by the hand-crank.

______________________________________ 1 mark

b. State what type of mechanism the hand-crank is (apart from a crank).

_______________________________________ 1 mark

c. Calculate the resulting moment (of force) when the user applies a force of 25N at the end of

the hand-crank.

2 marks

d. Suggest ONE modification on the design of the hand-crank which would increase the

resulting moments. Give a reason for your answer.

MODIFICATION

REASON

2 marks

3. The pivot of the hand-crank is connected to a train of compound gears.

a. What is a gear train?

________________________________________________________________________________

1 mark

b. Define compound gears.

________________________________________________________________________________

1 mark


c. In the space provided, draw the symbolic representation of ONE compound gear. Use the

necessary drawing instruments.

2 marks

d. Give ONE reason why compound gears were used instead of simple gears.

________________________________________________________________________________

________________________________________________________________________________

2 marks

4. The lighting unit consists of an array of eight ultra-bright white LEDs connected as shown in

Figure B. This unit is being supplied with 6V d.c. and each LED required 3V and 20mA to

function properly.

a. Fill in the blanks.

i. LED3 is connected in series with ________.

ii. LED1 and LED2 are connect in parallel with ________ and _______.

2 marks

6V

0V

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

Figure B: Lighting circuit


b. Give ONE reason why the eight LEDs were not connected all in series.

________________________________________________________________________________

________________________________________________________________________________

1 mark

c. Using Ohm’s Law, explain how to find R, in any simple circuit.

1 mark

5. The manufacturer of the torch would like to add a new feature by which the user can either light

up all the eight LEDs or only 4 LEDs to obtain dimmer light.

In the space provided, redesign the circuit in Figure B by adding TWO switches so as to

achieve this new feature.

3 marks


6. In order to prevent the lights from switching on when there is still enough ambience lighting, a

control circuit as the one shown in Figure C, can be

included.

a. Give the name of the following components:

i. R1: ___________________________________

ii. R2: __________________________________

iii. TR1: _________________________________

3 marks

b. On Figure C, circle the potential divider circuit.

1 mark

c. Explain the function of component TR1 in the control circuit shown in Figure C.

__________________________________________________________________________

1 mark

d. Suggest what happens if components R1 and R2 switched positions.

__________________________________________________________________________

__________________________________________________________________________

2 marks

7. Sketch in 2D freehand drawing, the surface development (net) of a cuboid packaging for this

torch. (Do not include graphics)

3 marks

+

_

R1

R2

TR1

Figure C: Lighting control circuit

Packaging example


8. When going camping we need to take cooking utensils to prepare

food as shown in Figure D.

a. Suggest a metal which is suitable for these cooking utensils.

_________________________________________

b. Which type of plastic should be used if plastic is chosen for the

handles of these utensils? Underline the correct answer.

Thermosetting plastic Thermoplastic

c. Mention one property of this type of plastic.

___________________________________________________ 3 marks

9. These cooking utensils need to be modified to make the handles longer for use on open fires.

The chosen material is wood.

In the space provided below sketch to describe the fabrication process to manufacture the

wooden handle. Suggest the tools required for the fabrication process.

Note: Ignore the holes and rivets.

Forming the handle

PLAN

FRONT

Wooden handle

Figure D


X Y

4 marks

10. The picture in Figure E shows a foldable camping

chair. The structural frame of the chair is made of steel

and the seat is made of Canvas. While manufacturing

this type of structural frame for the chair, the steel

pipes need to be cut to the correct length.

Fill in the blanks with the tools you would use in a

D&T lab:

a) A __________________ is used to measure the length of the tubes.

1 mark

b) A __________________ is used to cut the tubes. 1 mark

c) The whole metal structure of the chair is made of circular cross

section tubes. Using drawing instruments draw the cross

section of the mentioned standard form, on the centre lines

provided.

On the drawing suggest with appropriate dimension the suitable

outside diameter for the tube.

2 marks

d) Joint Y is a free pivot, the tubes are attached together using a particular fastener.

Mention a suitable fastener that can be used as a free pivot.

__________________________________________________________ 2 marks

Finishing the handle

Figure E


e) The plastic joint marked X is formed and produced with injection moulding process. The

diagram below shows an injection mould machine. Using the given words, write the part

names on the diagram.

Hopper Heater Heater Motor Screw Mould

3 marks

The seating is made out of Canvas. Canvas is usually made of cotton or linen.

f) Underline the correct word.

i. Cotton is an (organic material/ synthetic material) made from (plant fibres/ animal

fibres) that goes through several processes until the fibre can be spun.

2 marks

ii. Mention two camping products which are made of cotton.

_________________________

_________________________ 2 marks

g) A head rest pillow needs to be attached temporary to the back of the foldable chair.

Name a type of fabric fastener that can be used for the pillow case.

__________________________________________________

1 mark

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