← Ability
Checking & Mechanical

Fault Finding Test

The Fault Finding Test, also known as a fault diagnosis test, measures a candidate's ability to diagnose faults in electrical and mechanical systems by understanding how different inputs are modified by a series of switches.

Each of the 25 questions, completed in 20 minutes, presents a grid describing switch functions alongside a flowchart showing an input-switches-output sequence using 3 of 7 possible switches. It is commonly used for technical, operational, and armed forces roles such as electricians, engineers, and maintenance staff.

Duration
20 minutes
Timed
Questions
25
Parallel versions
8
Norm group
10,380 Job Applicants
Reports
2 samples
See below

Try a sample question

These are the practice questions a candidate sees before the Fault Finding Test starts. Have a go — the answer and an explanation appear after each one. Nothing is recorded.

Input
Position 1: Off
Position 2: Off
Position 3: On
Position 4: Off
Switch AHexagon
Switch BCircle
Switch CTriangle
Output
Position 1: On
Position 2: On
Position 3: On
Position 4: Off

Sample reports

Real reports generated for a sample candidate through the same pipeline a live sitting goes through.

PDF
Sample Assessor Report
See a real example of the confidential report the hiring team receives -- percentile, band and the areas to probe at interview.
Open the report
PDF
Sample Candidate Report
See a real example of the feedback report a candidate can be sent -- no scores, a plain result and development advice.
Open the report
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