Preview Questions Electrician | Role Specific Skill

Question 1: What is the maximum permissible voltage drop for a 120V circuit according to the NEC, to ensure efficient operation?

Which action should you take?

Choose only one option

2%

3%

10%

5%

Question 2: What is the function of a fuse in a circuit, and how does it protect the wiring system in the event of a short circuit?

Which action should you take?

Choose only one option

It provides continuous current flow to maintain operation

It ensures only one circuit is activated at a time

It increases the current capacity of the system

It interrupts the current flow to prevent overheating and fire hazards

Question 3: In electrical troubleshooting, what should you do first when diagnosing a no-power issue in a circuit?

Which action should you take?

Choose only one option

Verify the type of wire used in the installation

Measure the voltage drop in the entire circuit

Inspect the insulation of wires

Check if the circuit breaker is tripped or fuse is blown

Question 4: How should an Electrician manage the installation of wiring in a multi-story commercial building to ensure safety and functionality?

Which action should you take?

Choose only one option

Install wiring without proper labeling or separation

Run all wiring in the same conduit without considering floor levels

Use the same wiring for all floors without additional support

Use riser-rated cables and ensure proper separation of systems, such as power and data, and route them with proper support between floors

Question 5: When troubleshooting a tripped circuit breaker, which of the following is the most likely cause?

Which action should you take?

Choose only one option

Incorrect breaker size

Faulty ground connection

Overloaded circuit or short circuit

Insufficient insulation

Question 6: What is the maximum allowable voltage drop for a 240V residential circuit as per the NEC guidelines?

Which action should you take?

Choose only one option

2%

10%

5%

3%