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
