Key term
CCEA A-Level Technology and Design 8900
Material Selection and Wood
Metals
Plastics
Composite and Emerging Materials
Processing Materials
Product Analysis and Design Communication
Design for Manufacture, Quality and Safety
Electronic Control SystemsOption A
Topic overviewControl systems, feedback and electronics safetyResistors, Ohm's law and power ratingsCapacitors and RC timingPotential dividers, sensors and comparatorsSwitches, pull-up and pull-down resistorsOutput devices and LEDsTransistors, Darlington pairs and thyristorsLogic gates, truth tables and flip-flops555 monostable and astable timers
Microelectronic Control SystemsOption A
Topic overviewMicrocontroller systems, ADCs and DACsStrain gauges and bridge circuitsOptical switches, encoded discs and Schmitt triggersOp-amp amplifiers and gainZener diodes and voltage regulatorsKarnaugh maps and binary countersSeven-segment, LCD and dot matrix displaysPIC flowcharts and programmingDC motors, stepper motors and driver circuits
Mechanical and Pneumatic ComponentsOption B
Topic overviewOpen and closed loop mechanical and pneumatic controlSafe working with compressed air and mechanismsLevers, linkages and momentsGear types and gear trainsPulleys, belts, chains and shaft fixingsCams, cranks and converting motionCompressed air supply and pneumatic valvesCylinders, shuttle valves, restrictors and reservoirsPneumatic circuits for logic, timing and speed control
Mechanical and Pneumatic SystemsOption B
Topic overviewHydraulics, system limitations and plant safetyTorque, work, power and air consumptionVacuum handling, proximity sensors and 5/3 valvesSequential and cascade pneumatic circuitsCam profiles and follower displacement diagramsGear geometry, pulley blocks and ratchetsToggles, treadles, shafts and couplingsFriction, brakes and clutchesBearings, lubrication and seals
Designing and Manufacturing ProductsOption C
Topic overviewResearch, questionnaires and specificationsIdea generation, critiques and computer simulationManufacturing planning and product evaluationCFRP, GRP, Kevlar and tungsten carbideSmart materials, nanotechnology and biophotovoltaicsIsometric, perspective and assembly drawingLaminating, steam bending, cutting and printing processesRisk assessment and product safety lawScales of production, JIT and cell productionQuality assurance, ISO 9001 and continuous improvementDesign influences and intellectual property rights
Product Design in Industry and SocietyOption C
Topic overviewLife-cycle environmental impact and climate changeThe 6Rs, waste and environmental legislationSustainable metals, plastics and degradable polymersProduct life cycles, consumer types and relaunchesCAD, CAM, 3D scanning and quick-change mouldingMarket pull, technology push and market strategyPrice, place and promotionJigs, fixtures and ICT in quality controlDesign for maintenance, inclusion and scale productionRendering, typography and presentationDyson, Baylis, Memphis and Apple
Product Development
Product and System Design and Manufacture
Product and System Design and Manufacture
Working drawings and planning manufacture
- 3 things to know
- A2 2
Overview
Working drawings, third-angle projection, dimensions and tolerances, exploded drawings, making plans, Gantt and flow charts, cutting lists, CAM, rapid prototyping, quality control and safety.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
What is third-angle orthographic projection?
Key term
Why are dimensions on working drawings given in millimetres?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a working drawing?
Model answer
A working drawing gives all the information needed to manufacture a product or component. Dimensions, materials, tolerances and finishes are included.
- 2
What is third-angle orthographic projection?
Model answer
Third-angle orthographic projection shows an object in separate front, plan and end views arranged to a convention. The plan is drawn above the front view.
- 3
Why are dimensions on working drawings given in millimetres?
Model answer
Millimetres are the standard unit for engineering drawings in the UK. A single unit avoids confusion and errors in manufacture.
- 4
What is a tolerance on a working drawing?
Model answer
A tolerance is the acceptable variation from a stated dimension. A tolerance of ±0.5 mm means a 50 mm part may measure from 49.5 to 50.5 mm.
- 5
What is an exploded drawing?
Model answer
An exploded drawing shows the parts of a product separated along their lines of assembly. The drawing makes clear how components fit together.
- 6
Why is a detailed plan of the making process needed?
Model answer
A making plan sets out the stages, processes, tools and time for each part. Planning prevents mistakes and helps the work finish on time.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Product and System Design and Manufacture, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
Or £46 a year, about £3.83 a month. Cancel anytime.