BECE BDT Pre-Technical Skills 2018 Past Q&A

June 2018
BASIC DESIGN AND TECHNOLOGY 2
(Pre-Technical Skills 2)

Essay
1 hour 15 minutes

SECTION A
(CORE SKILLS)
[20 marks]

Answer question 1

1. (a) State one advantage of baked foods. [2 marks]

(b) State two disadvantages of freehand cutting. [4 marks]

(c) (i) List two stages of the design process. [2 marks]

(ii) List two methods of recording information for solving a design problem.
[2 marks] (iii) Name a suitable pencil for sketching a possible solution in a design work.
[1 mark] (iv) List two methods of sketching a final solution in pictorial drawing
[2 marks]

(d) (i) Define a poster. [2 marks]

(ii) Give two reasons why poster is important in advertisement. [2 marks]

(iii) List two types of poster. [2 marks]

(iv) State one major difference between the two types of poster [1 mark]

SECTION B
[50 marks]

Answer two questions only from this section
All questions carry equal marks

2. (a) (i) Make a freehand pictorial sketch of the brick hammer.
(ii) Label any two parts of the brick hammer sketched in question 2 (a)(i)
(iii) State one use of the brick hammer

(b) State one reason for each of the following operations:
(i) oiling metal parts of the firmer chisel
(ii) wearing goggles when grinding the cold chisel
(iii) racking back a wall.

(c) State one use of each of the following electronic components:
(i) resistor
(ii) inductor
(iii) diode
[25 marks]

3. (a) Figure 1 shows the Orthographic Projection of a block made of metal.
Use it to answer questions (a)(i) to (a)(iv)

(i) Copy the views shown in figure 1
(ii) Label the copied views shown in question (a)(i) with the following:
(α) front elevation
(β) plan
(γ) end elevation
(iii) State the type of orthographic projection used
(iv) Name one cutting tool used for producing the 5mm diameter hole.

(b) (i) Make a freehand pictorial sketch of a pick axe.
(ii) Label any one part of the pick axe sketched in question 3(b)(i)
(iii) State one use of the pick axe.
[25 marks]

4. (a) (i) Make a freehand pictorial sketch of the mould box.
(ii) State one use of the mould box.
(iii) State one reason for oiling the inside of the mould box before using it.

(b) State two examples of each of the following materials:
(i) non-ferrous alloys;
(ii) aggregate
(iii) abrasives

(c) Figure 2 shows the sketch of a piece of timber for making a joint. Copy and complete the processes involved in preparing the workpiece in the table below

OPERATION ONE TOOL USED FOR CARRYING OUT OPERATION
(i) Measure the given length and width
(ii) cut off the rough piece;
(iii) Plane the face side and face edge
(iv) Test for flatness and squareness
(v) Mark face side and face edge
(vi) Plane off waste
(vii) Square one end and mark the required length;
(viii) cut off the waste

June 2018
BASIC DESIGN AND TECHNOLOGY 2
(Pre-Technical Skills 2)
Objective Test
ANSWERS

1. (a) State one advantage of baked foods.
(i) Baked foods look attractive
(ii) Baked foods are appetizing
(iii) They last longer as compared to boiled foods
(iv) They do not need much attention when cooking
(v) Shape of the food is maintained.
[2 marks]

(b) State two disadvantages of freehand cutting.
(i) It is not easy for beginners because they cannot cut accurately and precisely
(ii) Mistakes made cannot be easily corrected
(iii) It can result in waste of fabric
(iv) It is difficult to estimate or determine the exact quantity of fabric needed
(v) It is sometimes difficult to match motifs and lines
(vi) It leads to change in style
(vii) It requires special skill
[4 marks]

(c) (i) List two stages of the design process.
 Problem identification / Situation
 Brief
 Analysis
 Investigation
 Specification
 Making
 Possible solution
 Final solution
 Development of chosen solution
 Working drawing
 Testing
 Evaluation
[2 marks]

(ii) List two methods of recording information for solving a design problem.
 Note-taking
 Tape recording
 Taking pictures / photographs
 Making sketches / drawing
 Graphs
 Modelling
 Video recording
 Charts
[2 marks]

(iii) Name a suitable pencil for sketching a possible solution in a design work.
 HB pencil
 H pencil
 2B pencil
[1 mark]

(iv) List two methods of sketching a final solution in pictorial drawing
 Oblique
 Isometric
 Perspective
[2 marks]

(d) (i) Define a poster
A written or printed message on a fairly large sheet of paper used to announce events and advertise goods and services
OR
It is a notice or advertisement that informs the public
[2 marks]

(ii) Give two reasons why poster is important in advertisement.
 It provides information to the public
 It educates the public
 It announces important events to the public
 It promotes sales / patronage.
[2 marks]

(iii) List two types of poster
 Pictorial
 Fully text / non-pictorial / texture poster / unwritten poster
[2 marks]

(iv) State one major difference between the two types of poster
Pictorial combines drawing or photographs with text, while fully text has no illustration at all
[1 marks]

SECTION B
[50 marks]

2. (a) (i) Make a freehand pictorial sketch of the brick hammer.

(ii) Label any two parts of the brick hammer sketched in question 2 (a)(i)
Head, handle

(iii) State one use of the brick hammer
 Brick hammer is used for cutting bricks / blocks into required sizes;
 Tapping blocks / bricks into position

(b) State one reason for each of the following operations:
(i) oiling metal parts of the firmer chisel
 To prevent rusting
 To last longer

(ii) wearing goggles when grinding the cold chisel
To prevent flying metals or chips from entering the eye

(iii) racking back a wall.
 For future continuation of the wall
 Temporary termination of a wall

(c) State one use of each of the following electronic components:
(i) resistor
 It resists / opposes the flow of the current
 It is used in heating coil /
 It is used in incandescent lamp /
 It is used in dryer /
 It is used in wireless set

(ii) inductor
 It creates a magnetic field / oscillators
 It is used in motor coils /
 It is used in ceiling fan /
 It is used in compact fluorescent lamp /
 It is used in choke or ballast

(iii) diode
 It allows current to flow in one direction only;
 It is used in converting a.c to d.c
 It is used in compact fluorescent lamp
 It is used in wireless set

3. (a) Figure 1 shows the Orthographic Projection of a block made of metal.
Use it to answer questions (a)(i) to (a)(iv)

(i) Copy the views shown in figure 1
(ii) Label the copied views shown in question (a)(i) with the following:
(α) front elevation
(β) plan
(γ) end elevation

(iii) State the type of orthographic projection used
Third angle projection

(iv) Name one cutting tool used for producing the 5mm diameter hole.
 Drill bit
 Twist drill bit
 Hand drill

(b) (i) Make a freehand pictorial sketch of a pick axe.

(ii) Label any one part of the pick axe sketched in question 3(b)(i)
 Metal body
 Pointed end
 Flat end
 Handle

(iii) State one use of the pick axe.
 For digging
 For trenching

4. (a) (i) Make a freehand pictorial sketch of the mould box.

(ii) State one use of the mould box.
Used for making / moulding blocks or bricks

(iii) State one reason for oiling the inside of the mould box before using it.
 To prevent the mortar from sticking to the mould box
 To allow for the easy removal of the mould box after moulding the block / brick

(b) State two examples of each of the following materials:
(i) non-ferrous alloys;
 brass
 bronze
 soft solder

(ii) aggregates
 stone
 sand
 gravel
 chippings

(iii) abrasives
 Emery cloth
 sand / glass paper
 oxide paper / wet and dry

(c) Figure 2 shows the sketch of a piece of timber for making a joint. Copy and complete the processes involved in preparing the workpiece in the table below

OPERATION ONE TOOL USED FOR CARRYING OUT OPERATION
(i) measure the given length and width  Tape measure /
 Ruler
(ii) cut off the rough piece;  Cross-cut saw
 Tenon saw
 Dovetail saw
(iii) Plane the face side and face edge  Smoothing plane
 Jack
 Roughing plane
(iv) Test for flatness and squareness  Try square
(v) Mark face side and face edge  Pencil
(vi) Plane off waste  Smoothing plane
 Jack plane
 Roughing plane
(vii) Square one end and mark the required length;  Try square
 Tape measure
 Roughing plane
 Ruler
 Pencil
 Smoothing plane
 Jack plane
(viii) cut off the waste  Cross-cut saw
 Tenon saw
 Dovetail saw