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100

Why is it important to follow proper procedures when checking wiring and circuits?

It ensures safety, prevents electrical hazards, and helps identify potential issues before they cause serious damage or failures.

100

What are the common tools used for testing electrical wirings and circuits?

Some commonly used tools include a multimeter, clamp meter, insulation tester, circuit tester, and thermal imaging camera.

100

What are the key steps in checking electrical wirings and circuits?

  • Turn off the power supply before inspection.
  • Use appropriate testing tools to check voltage, continuity, and insulation resistance.
  • Look for signs of wear, damage, or overheating.
  • Repair or replace faulty components as needed.
  • Restore power and conduct a final test to ensure proper function.
100

How does preventive maintenance help in reducing electrical failures?

Preventive maintenance involves regular inspections to detect signs of wear or potential failure, allowing problems to be fixed before they cause major issues.

100

What makes condition-based maintenance different from preventive maintenance?

Condition-based maintenance relies on monitoring the actual condition of equipment rather than following a set schedule. It helps detect early warning signs of failure through factors like temperature, vibration, and moisture levels.

200

What technology is used in predictive maintenance?

Predictive maintenance uses sensor devices that collect real-time data, which is analyzed by software to predict potential failures before they happen.

200

Give an example of corrective maintenance in an electrical system.

A technician is fixing a circuit breaker issue and notices that a nearby power outlet is sparking. The technician immediately repairs the faulty outlet to prevent further damage.

200

How does predetermined maintenance help extend the lifespan of electrical systems?

It follows manufacturer recommendations on when to inspect, service, or replace components based on tested data, ensuring optimal performance and longevity.

200

Which type of maintenance would be best for a school’s electrical system and why?

Preventive maintenance would be ideal because regular inspections help identify and fix issues before they cause power failures or safety hazards.

200

If a machine’s manufacturer recommends changing a motor every 5 years, what type of maintenance is being followed?

This is an example of predetermined maintenance, as it follows guidelines set by the manufacturer rather than based on condition monitoring.

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