Preview Questions Electrician | Role Specific Skill

Question 1: In a commercial building, how do you typically ensure adequate grounding of the electrical system for safety?

Which action should you take?

Choose only one option

By reducing the number of grounding points in the system

By using only insulated conductors and minimizing exposed metal

By grounding only the service panel and neutral bus

By connecting the ground conductor to a ground rod and ensuring proper bonding of all metal components

Question 2: How does the NEC define "dedicated circuits" for appliances?

Which action should you take?

Choose only one option

Circuits that power multiple devices

Circuits that share a common neutral conductor

Circuits that are used only in emergency situations

Circuits that power only one appliance or load

Question 3: When troubleshooting a circuit that is not working, what is the first step you should take?

Which action should you take?

Choose only one option

Check the ground connection

Check the voltage supply to the circuit using a multimeter

Replace the circuit breaker with a larger size

Immediately replace all wiring in the circuit

Question 4: How does overcurrent protection in an electrical system help to prevent fire hazards during installation?

Which action should you take?

Choose only one option

It ensures grounding is properly configured

It limits the amount of voltage reaching electrical devices

It prevents ground faults from occurring

It disconnects the circuit when the current exceeds the system's rated capacity, preventing overheating

Question 5: According to the NEC, which of the following wiring methods is acceptable for outdoor residential use?

Which action should you take?

Choose only one option

Nonmetallic sheathed cable (NM)

Underground feeder cable (UF)

Armored cable (AC)

All of the above

Question 6: In residential wiring, which conductor type is most commonly used for branch circuits?

Which action should you take?

Choose only one option

Romex (Non-metallic sheathed cable)

UF Cable (Underground Feeder)

MC Cable (Metal Clad)

THHN (Thermoplastic High Heat-resistant Nylon-coated)