RBT Mock Test Flashcards
Stainless Steel Sink (2 physical and 2 mechanical properties) (8 marks)
Physical:
-Resistant to corrosion, will not rust with water
-Chemical resistant, will not degrade with detergents
Mechanical:
-Hardness,resistant to scratching from cutlery
-Malleability, can be press formed into shape
Explain the term “fabrication process” (2 marks)
The joining of separate material to make a complete product, example is welding
Compare plastic chair to wooden chair for long term use (6 marks)
Plastic Chair;
-Easily manufactured in once piece
-Does not require a finish that could wear off over time
-There is colour throughout the entire of the product. scratches harder to see
- Is not affected by moisture, wont grow fungi
-Lightweight and easy to store away
Wooden Chair;
-Hardwood contains natural oils, will prevent decay
-Wood can be stained to improve aesthetics
-Finish has to be re applied on regular basis
-Could be damaged by insects
-Much heavier than plastic chair, harder to store
Describe how dining table would be crafted with manual techniques (14 marks)
USE PYTHAGORAS FOR AB LENGTH
- Mark out lengths for top part with try square and ruler
- Cut table top to length with hand saw
- Mark out cross halve joint in legs
- Mark out cross pieces for table top
- Cut and join supports
- Sand all parts with sander or sand paper
- Attach all parts together with glue
Name three features of a good vacuum formed mould (3 marks)
- Smooth Edges
- Rounded Corners
- Lack of undercut)
Describe Vacuum Forming Process (with diagram)
- Mould placed on bed
- Sheet of plastic clamped onto machine
- Heating element heats up plastic (H.I.P.S)
- Heated until plastic is softened
- Mould placed into soft plastic and vacuum draws plastic around the mould
- Plastic is left to cool once machine is switched off
- Mould is removed and plastic is trimmed to size
Volume of a lamp holder (4 marks)
1, (200 x 200 x 50) - (150 x 150 x 25)= 1437500mm
2, 1437500- (pi x 12.5 squared) x 25 = 1425228
3, convert to m (Divide by 1000000000) nine 0’s
0.001425228 x 1580 x 150 = £337.80
How the tube will be formed & length of arc (6 marks)
Forming process -Use CNC tube bender, must be programmed and the material must be checked for any damage before starting Maths: 1, (2 x pi) (100 divided by 4) = 157.07 2, 300 + 50 + 157.07 = 507 (remove .07)
Width of lamp shade (3 marks)
Use trig, answer is 181.05 GLHF
F shape (2 marks)
Count all outer sides, perimeter is 1000mm (1m) =1 meter every 5 mins =0.2 meter every min =0.0033 meter every second (Acrylic) Plywood Times 0.0033 by 1.15 to find 15% extra 0.0038
Carton vs Can comparison (12 marks)
Carton:
• carton is easier to open than can
• carton can be crushed easily to aid disposal
• Carton does not leave sharp edges when opened.
• Carton uses less energy to manufacture than steel can
• Carton is not easy to recycle due to difficulty cleaning.
Metal Can:
-Tin can is easily sorted and recycled as it is magnetic
-Tin plating prevents corrosion and prolongs life of the
can.
• Cans are heavy and can be dented if dropped.
• Although fitted with a ring pull, the can is not easy to open for
elderly/arthritic users.
• The can does not have a large surface area for printing
Appropriate Printing process for prototype packaging
6 marks
Digital Printing
- High quality
- Consistent
- Fast Set up
- Colours can be adjusted
- Specialist Equipment not needed
- Easy to make changes
CAD Modelled Remote (6 marks)
- Allows fine details
- Quicker than hand made modelling
- Cost Effective
- Model can be physically used for customer feedback
Three benefits of rapid prototyping (3 marks)
- Produces life size model
- Can be used for feedback
- Cost effective
How designers use Ergonomics and Anthropometrics (9 marks)
Anthropometrics: -Use palm to determine length of remote -Finger size determines button size and spacing -Average grip size to determine depth of remote Ergonomics: -Use colour on frequently used buttons -Shape back of remote for grip -Use images on buttons to help with use -textured grip/edges
What is a composite material (2 marks)
A mix of two materials to enhance properties
Name a suitable material (1 mark)
GRP
Stages of a lay up method (6 marks)
Stage 1: Mould creation Stage 2: Add release agent Stage 3: Add gel coat (with pigment) Stage 4: Layer fibres and resin Stage 5: Remove air bubbles Stage 6: Leave to cure and trim edges
Social, Moral,Ethical Issues (12 marks)
The development of products that are culturally acceptable, that will not offend
people of different race, gender or religious belief.
• Designing products that will be made without the use of child labour and using
safe working practices.
• A knowledge and understanding of the impact of the manufacture, use and
disposal of products on the environment.
• Selection of materials that are not damaging to the environment
• Choosing sustainable raw materials
• Product longevity vs throwaway products
• Not harming wildlife/environment
• Sustainable forms of power
• Energy consumption during manufacture and the life of the product
• Inclusive design
• Consideration of 6 R’s
• Safety legislation
• Manufacturing conditions for employees
Compare baby feeding spoons (5 marks)
Changes colour with heat which is a safety feature. The user will know the
spoon is hot by the colour change, the metal spoon stays the same colour
hot or cold.
• The colour change with heat indicates the food is too hot for the baby. With
the metal spoon the user may taste the food on their mouth first, thus
transferring germs to the baby.
• The colour change shows the spoon is hot but polymer is an insulator so the
user will not get burned. The metal spoon stays the same colour so the user
does not know if the spoon is hot or cold.
• The thermochromic pigment can be integrated within the single injection
moulding process, to transform the metal spoon into a colour changing
spoon the thermochromic pigment would have to be applied after the spoon
is manufactured, as an additional process.
