1. WJEC ENGINEERING Level 1/2
Exam Content – UNIT 3 Over the next 2 pages is all the content you need to know for the exam. Highlight if you understand all the content for each section, this should be your revision guide.

2. Give an example of and describe a Structural Engineering Project
UNIT 3 CHECKLIST
Give an example of and describe a Structural Engineering Project
Give an example of and describe an Electronic Engineering Project
Give an example of and describe a Mechanical Engineering Project
Give an example of and describe the work of an International Engineer
Give an example of and describe the work of a UK Engineer
Discuss the applications and possibilities for new technologies/materials/ products
Discuss the key outputs -in terms of inventions and technologies- and their impact on industry and society
Discuss and give examples of New Engineering Materials
Discuss and give examples of New Engineering Technologies
Explain and give examples of Engineering Achievements in the Home
Explain and give examples of Engineering Achievements in Industry
Explain and give examples of Engineering Achievements in Society
Describe and evaluate the concept of sustainability in engineering
Explain and give examples of the environmental implications of the use, disposal and recycling of materials and products
Explain and give examples of the environmental implications of materials extraction, processing and development
Explain and give examples of the environmental implications of engineering processes
Evaluate the relationship between -and constraints of- cost and sustainability
List and explain the material properties needed for Structural Products such as: buildings and bridges.
List and explain the material properties needed for Mechanical Products such as: gearboxes; cranes and bicycles.
List and explain the material properties and circuit requirements needed for Electronic Products such as: mobile phones; alarms and testers.
Explain and give examples of the following material properties: Tensile Strength; Hardness; Toughness; Malleability; Ductility; Conductivity; Corrosive Resistance; Environmental Degradation and Elasticity.
Explain and give examples of how materials are tested in destructive and non-destructive ways such as: the Brinell, Vickers and Rockwell hardness tests; a destructive tensile/ductility test on an extensometer; or a Charpy, Izod or Houndsfield toughness test
Explain the composition and properties of the following materials families: Ferrous Metals and Non-Ferrous Metals. Be able to select the right material for a job or purpose and justify that choice.
Explain the composition and properties of the following materials families: Thermoplastics and Thermosetting Plastics. Be able to select the right material for a job or purpose and justify that choice.
Define Smart Materials. Explain the composition and properties of the following materials families: Smart Materials and Composites. Be able to select the right material for a job or purpose and justify that choice. Be able to explain why these materials have been developed and the advances in technology associated with them

3. Describe and justify the choice of -in a given situation- the forming processes: Vacuum Forming and Line Bending
Describe and justify the choice of -in a given situation- the reforming processes: Sand Casting, Injection Moulding and Pressure Die Casting
Explain the concept of estimation and be able to estimate, with reasonable accuracy, from drawings, products or mathematical questions
Explain the concept of the mean (average) and be able to solve problems to work this out in a given question
Show familiarity with metric units of measurement and be able to solve problems and answer questions using: meters and millimetres: pounds and pence
Be able to draw and confidently convert between isometric and third angle orthographic views
Be able to understand and produce sectional views in presentation drawings
Be able to confidently use construction lines, centre lines, and hidden detail lines in a technical drawing
Be able to confidently use standard conventions in a technical drawing such as: dimensioning; interrupted features; screw threads and sizes; champhers and countersinks; repeated features and tolerances
Analyse engineering problems by: filtering and synthesising (putting together) information and then identifying important points, requirements and constraints
Propose well thought-out written and drawn solutions to engineering problems with quality communication and a logical structure
Describe and justify -in a given situation- the choice of the wasting processes: Filing, Drilling, Turning, Milling, Shaping
Describe and justify the choice of the permanent joins: Hard Soldering (Brazing, Silver Soldering), Soft Soldering, Welding, Riveting, Epoxy Resin
Describe and justify the choice of the temporary joins: Nuts, Bolts (Engineering Screws), Snap Fittings
Describe and justify the choice of the heat treatments: Hardening, Tempering, Annealing (Ferrous), Annealing (Non-Ferrous), Normalising, Case Hardening. Further understand the principle of Work Hardening and that is not a heat treatment
Describe and justify the choice of the Chemical Treatments: Pickling, Etching, Anodising
Recall the Ohms Law equation and be able to calculate current, resistance and voltage problems out using the equation
Recall the equation and be able to work out the efficncey of a motor, product or electrical system
Recall the equations and be able to work out the area and volumes of various shapes including: squares; rectangles, circles, cubes, cuboids
Be able to measure drawings and products accurately to: convert into a different view; reverse engineer or do a related calculation

4. Useful reading and revision guides