Free mock exam
Design Documentation — Level 3 Systems Design Practice
Free topic-focused mock exam: all 22 questions on Design Documentation, drawn from the wider Level 3 Systems Design bank. 35-minute timer, 70% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.
- Questions
- 22
- Time limit
- 35 min
- Pass mark
- 70% · 16/22
- Question bank
- 22
Free, no sign-up. Retake as many times as you like — the questions are reshuffled, with the answer order changed.
Sample questions
01Design documentation must include:
- Athe pricing build-up and the profit margin agreed with the main contractor
- Bthe tariff details agreed between the client and the electricity supplier
- Cphotographs of the completed decoration and the finishes chosen
- Dsufficient information to verify the design and enable safe operation
Why: Documentation must enable verification of the design and provide information for safe operation and maintenance.
02Single-line diagrams show:
- Athe supply tariff and the metering arrangements agreed at the origin
- Bthe decorative finishes chosen for the interior of the building
- Cthe exact physical position of each cable within the building
- Da simplified representation of the circuits and equipment
Why: Single-line diagrams show the circuit arrangement in a simplified form, for an overall understanding.
03Schematic diagrams provide:
- Athe functional relationships between components
- Bthe warranty terms offered by the manufacturer
- Cthe physical dimensions of the structure
- Dthe cost breakdown for the whole of the installation
Why: Schematics show how circuits function and how the components interconnect logically.
Common questions
Is the Design Documentation mock exam free?
Yes — 100% free, no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.
Can I retake the mock exam?
Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.
Does this count towards the real qualification?
No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.