About this practice
Choose tools for the task
This focused test checks whether you can match common tools and measuring instruments to a safe, useful purpose.
Prepare for electrical isolation, airflow checks, refrigeration service tools, evacuation and leak testing. Questions reward safe, methodical diagnosis rather than replacing parts by guesswork.
How to use this test
- Complete every question without checking an answer elsewhere.
- Read the reason for every incorrect answer in your result.
- Practise weak skills hands-on with competent supervision.
Core areas for this trade
Electrical isolation
Identify all energy sources, isolate equipment and confirm a safe condition before internal work.
Airflow
Check filters, coils, fan operation and restrictions before assuming a refrigerant fault.
Service tools
Use gauges, thermometers, vacuum instruments and electrical meters for their intended purpose.
Independent practice content — not an official exam or official question bank.