Question 6
- Define the following terms
- Corrective maintenance;
- Preventive maintenance.
- When the metal part of an energized electric iron is touched with a test lamp, the lamp comes on.
State the:
- Possible cause of this fault;
- Corrective action to be taken.
Observation
The expected responses were:
- Definition of terms
- Corrective maintenance is a form of maintenance carried out on a faulty/damaged machine/equipment to restore back to working condition
- Preventive maintenance is a form of maintenance carried out periodically according to the producer/manufacturer manual to keep the machine/equipment in good working condition.
-
- Short circuit
- Corrective action to be taken
- Check and tighten loosed terminals
- Check and clean corroded terminals
- Check and replace exposed wire touching metal parts
Many candidates who attempted this question did the definitions well but did not do the second part well.