BECE 2010 Basic Design And Technology (Pre Technical Skills ) Past Question Paper Two
. (a) What is a seam?
(b) Suggest the correct stitches for
(i) fringed edge of a tablecloth
(ii) making of a baby’s petticoat
(c) The figure below is a cube drawn in isometric
Sketch the cube in two-point perspective drawing
(d) (i) What is texture?
(ii) List the two types of texture
(e) Copy and complete the table below by providing the type of texture associated each object listed
| OBJECT | TEXTURE |
| Banana | |
| Pineapple | |
| Unwashed terrazzo |
1. (a) What is a seam?
A seam is a line of stitching, joining two or more pieces of fabric together permanently.
or
a line where two pieces of fabric are sewn together in a garment or other article
(b) Suggest the correct stitches for
(i) fringed edge of a tablecloth
Neatening stitches, such as overcasting, blanket stitch and hemming stitch
(ii) making of a baby’s petticoat
Decorative stitches, such as chain stitch, cross stitch, stem stitch and blanket stitch
(c)
Sketch the cube in two-point perspective drawing
(d) (i) What is texture?
The feel or appearance of surface or substance
Or
How rough or smooth a surface is or appears to be
(ii) List the two types of texture
Visual (virtual) texture
Tactile / Actual (tangible) texture
(e) Copy and complete the table below by providing the type of texture associated with each object listed
| OBJECT | TEXTURE |
| Banana | Tactile / Smooth |
| Pineapple | Tactile / Rough |
| Unwashed terrazzo | Visual / rough |
(a) State two methods suitable for joining sheet metals permanently
(b) Sketch a lap joint used in sheet metalwork
(c) List three items that can be manufactured from sheet metal
(d) Figure 1 shows the front view of a clock. Use it to answer the questions that follow.
d(i) State two properties of acrylic that makes it suitable for making the face of the clock.
d(ii) List two tools that can be used to mark-out the shape of the face of the clock.
(a) State two methods suitable for joining sheet metals permanently
Soldering
Welding
Riveting
Brazing
(b) Sketch a lap joint used in sheet metalwork
List three items that can be manufactured from sheet metal
• Roofing sheets
• Barrels
• Jewellery
• Graters
• Cooking utensils
• Tins
• Cans
• funnels
• buckets
• machine parts
• Water reservoir
(d) Figure 1 shows the front view of a clock. Use it to answer the questions that follow.
(IMAGE NEEDED)
(i) State two properties of acrylic that makes it suitable for making the face of the clock.
• Excellent optical clarity
• Excellent resistance to sunlight
• Rigid, with good impact strength
• Flexible and shock resistant.
• Easily cut, corrosion resistant and a good insulator.
(ii) List two tools that can be used to mark-out the shape of the face of the clock.
• Centre punch
• Felt-tip pen / marker pen
• Try square
• Pair of dividers
• Pencil
• Template
Figure 2 shows the front elevation and plan of a square prism. Use it to answer questions 3(a)
(a) Draw full size, the following: (i) front elevation (ii) plan (iii) surface development
(b) State one use of each of the following electronic components: (i) capacitor (ii) inductor (iii) diode
(c) Make a freehand pictorial sketch of a wooden mallet
3. Figure 2 shows the front elevation and plan of a square prism. Use it to answer questions 3(a)
IMAGE NEEDED
(a) Draw full size, the following:
(i) front elevation
(ii) plan
(iii) surface development
(b) State use one of each of the following electronic components:
(i) capacitor
• Stores electrical current for future use
• Used to operate the tuning dial of a radio
• Used in loudspeakers to block DC and allow only AC to flow
• Used to smooth out AC currents
(ii) inductor
• Used in electrical circuits to block AC while allowing DC to pass
• Used to create a filter by blocking high frequency current and allowing only a certain frequency to pass through the circuit
• Used as energy storage devices in transformers, motors and computers
• Used in proximity sensors, such as those used in traffic lights
(iii) diode
• Used as rectifiers – to convert AC to DC by allowing electric current to flow in only one direction
• Diodes are also used in/for the following:
? signal limiters,
? voltage regulators,
? switches,
? signal modulators,
? signal mixers,
? signal demodulators,
? oscillators
(c) Make a freehand pictorial sketch of a wooden mallet.
(a) Make a freehand sketch of a cross-cut saw
(b) List three materials from which sandcrete blocks are manufactured
(c) State one reason each for using the following in the workshop
(i) apron;
(ii) gloves;
(iii) helmet;
(iv) goggles
(b) List three materials from which sandcrete blocks are manufactured ? Sand, ? Cement ? Lime (c) State one reason each for using the following in the workshop (i) apron; To prevent clothes from becoming dirty / stained. (ii) gloves; To protect the hands from injury and dirt. (iii) helmet; To protect the head from injury (iv) goggles To protect the eyes from injury / prevent particles from entering the eyes
End Of Paper
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