Free mock exam
Diagnosis Methods — Level 3 Fault Diagnosis Practice
Free topic-focused mock exam: 30 random questions from a pool of 35 on Diagnosis Methods, drawn from the wider Level 3 Fault Diagnosis 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
- 30
- Time limit
- 35 min
- Pass mark
- 70% · 21/30
- Question bank
- 35
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01The half-split method of fault finding involves:
- AReplacing every component until the fault clears
- BTesting only at the supply origin repeatedly
- CTesting at the midpoint to eliminate half the circuit
- DWorking from the load back to the supply in order
Why: The half-split method tests at the circuit midpoint to determine which half contains the fault, then repeating the process to efficiently locate the fault.
02Before beginning fault diagnosis, the first step should be:
- ACarry out a full insulation resistance test of every circuit
- BGather information from the user about symptoms
- CBegin dismantling the load equipment
- DImmediately replace the consumer unit
Why: Gathering information about symptoms, when the fault occurs, and what changed before it started helps focus diagnosis and avoid wasting time.
03The 'six point' approach to fault finding includes all EXCEPT:
- ACollect evidence
- BReplace all components
- CAnalyse evidence
- DLocate the fault
Why: The six-point approach is: collect evidence, analyse evidence, locate fault, determine cause, rectify fault, and test. Wholesale component replacement is not part of systematic diagnosis.
Common questions
Is the Diagnosis Methods 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.
