Preview Questions Electrician | Role Specific Skill

Question 1: What is the likely cause of a circuit not receiving power even though the breaker is on?

Which action should you take?

Choose only one option

The breaker is too old and needs to be replaced

The circuit has too many outlets

A broken wire or connection somewhere in the circuit

The circuit breaker is over-sized for the circuit

Question 2: How does the NEC define the minimum height requirement for outdoor lighting in a residential installation?

Which action should you take?

Choose only one option

At least 10 feet above the ground

At least 8 feet above the ground

At least 6 feet above the ground

At least 12 feet above the ground

Question 3: What is the role of ground-fault circuit interrupters (GFCIs) in electrical installations, and where should they be used?

Which action should you take?

Choose only one option

Install GFCIs in areas with potential water exposure, such as bathrooms, kitchens, and outdoor outlets, to prevent electrical shock hazards

Install GFCIs on all circuits regardless of risk

Ignore the use of GFCIs and rely on circuit breakers

Use GFCIs only for non-critical circuits

Question 4: When troubleshooting a malfunctioning appliance, how do you determine if the issue is internal to the appliance or a wiring problem?

Which action should you take?

Choose only one option

Unplug the appliance and test the circuit for continuity

Test the appliance for power at the outlet

Check the power supply voltage at the appliance's input

Measure the resistance of the appliance

Question 5: In a commercial circuit design, how do you prevent electrical interference when running power and data cables together?

Which action should you take?

Choose only one option

By running power cables and data cables in the same conduit

By using data cables with larger insulation to avoid interference

By running data cables first, then power cables over them

By separating power and data cables with proper shielding and grounding to prevent electromagnetic interference

Question 6: What is the best way to troubleshoot a circuit with no ground continuity?

Which action should you take?

Choose only one option

Ignore it as ground continuity is not essential

Install a new ground rod without checking the existing ground system

Use a continuity tester to check for continuity from the outlet to the panel

Replace all wiring to ensure a good ground