Engineering Fundamentals and the Engineering Process
Engineering is the systematic application of scientific and mathematical knowledge to design solutions under constraints. Candidates must know the engineering method: identify the need, define the problem and constraints, research, generate and evaluate options, select, prototype, test, and iterate. Distinguish design brief (client need) from specification (measurable requirements) and constraints (limits such as budget, standards, materials) from criteria (desirable attributes). Understand systems thinking: inputs, processes, outputs, feedback, and boundaries. Recognise open versus closed problems, and why optimisation (trade-offs) replaces 'one right answer'.
Traps
Questions often blur constraint and criterion, or treat the process as strictly linear. Iteration and feedback are essential. Another trap: confusing invention (new principle) with innovation (successful application/commercialisation). Also watch for 'analysis' versus 'synthesis' - decomposing a system versus combining parts into a solution.
Worked rule of thumb
When evaluating options, use a weighted decision matrix: score each option against criteria (1–5), multiply by weight, sum. Example: three battery chemistries scored on energy density (weight 0.4), cost (0.3), safety (0.3). If A scores 5,2,4 → 2.0+0.6+1.2 = 3.8; B scores 3,5,3 → 1.2+1.5+0.9 = 3.6. A wins. Always check that weights sum to 1 and justify them.