Externally Set Task

2024 Engineering General EST Unit 3 Syllabus Content

2023 Engineering General EST Paper with solutions

EST Content 2025

Unit content

An understanding of the Year 11 content is assumed knowledge for students in Year 12. It is

recommended that students studying Unit 3 and Unit 4 have completed Unit 1 and Unit 2.

It is divided into core content and specialist engineering fields. Students must study all of the core

content material and at least one of the specialist engineering fields.

This unit includes the knowledge, understandings and skills described below.

Core content

Engineering design process

Investigating

• develop a design brief

• use research skills to identify existing solutions/products

• describe and analyse existing solutions/products

• research and describe materials and components relevant to the design brief

• consider forms of energy supplies

Devising

• annotated pictorial drawings of design ideas

• annotated orthographic drawings of design ideas

• the chosen option to be used as the solution

Producing

• present specifications for the selected solution

• dimensioned pictorial and orthographic drawings

  • orthographic drawings and sketches are 3rd angle projections and include

  •  lines – outlines, hidden detail and centrelines

•  dimensioning – linear, radii, circles, holes through or partial depth with flat base

materials selected

• parts lists

• costing of prototype or working model

• develop and use a timeline to construct and test the solution

• solution construction by selecting and using appropriate tools and machines, and following safe

work practices

• solution testing for correct function and document using checklists and test data

Evaluating

• final solution in terms of:

• meeting the requirements of the design brief

• function and finish of the product

• variations and changes to the design

Materials

Classify types of materials

• metals (pure)

aluminium

copper

zinc

iron

• alloys (ferrous)

steel

stainless steel

• alloys (non-ferrous)

brass

solder (lead/tin)

• polymers

polypropylene

polycarbonate

acrylic

ABS

nylon

• composites

concrete

reinforced concrete

Fundamental engineering calculations

Dimensional

• examine dimensioned drawings to determine:

overall length, height and width

direct and indirect dimensions: linear measurements, radii and diameters

Perimeter

• square and rectangular plane figures

• right triangular plane figures

hypotenuse2 = opposite2 + adjacent2

• circles

p = πd

Surface area

• square and rectangular plane figures

• cubes and rectangular right prisms

• right triangular plane figures

• triangular right prisms

• circles

A = π r2

• open ended cylinders

A = π d h

Quantity estimates

• determine lengths and surface area of:

• geometric shapes and forms

• individual shapes

• simple combinations of shapes and forms

Engineering in society

Energy

• define and describe relationships between:

• energy

• power

• work

• define and compare forms of energy

• kinetic

• potential

• thermal

• chemical

• electrical

• electro-chemical

• electromagnetic (light)

• sound

• nuclear

• identification of non-renewable sources

• fossil fuels: coal, gas and oil

• nuclear

• identification of renewable sources

• solar: thermal, biomass, photovoltaic and wind

• solar/gravity: waves

• gravity: tidal and hydroelectric

• geothermal

• advantages and disadvantages of non-renewable and renewable source