Preview Questions Electrician | Role Specific Skill

Question 1: In commercial electrical installations, which of the following wiring methods is typically used for high-voltage lines?

Which action should you take?

Choose only one option

MC (Metal-Clad) Cable

PVC (Polyvinyl Chloride) Conduit

Armored Cable (AC)

EMT (Electrical Metallic Tubing)

Question 2: According to the NEC, what is the maximum number of conductors allowed in a standard electrical box?

Which action should you take?

Choose only one option

4

2

12

6

Question 3: In electrical systems installation, how should conduit be sized to accommodate multiple wires while ensuring safety and efficiency?

Which action should you take?

Choose only one option

The conduit size should be based only on the wire insulation type

The conduit size should be based on the total cross-sectional area of the conductors, plus 25% for insulation

The conduit size can be determined by the length of the run

The conduit size is determined by the voltage rating of the circuit

Question 4: What is the correct procedure for designing a dedicated circuit for an air conditioning unit in a commercial building?

Which action should you take?

Choose only one option

Use an undersized breaker to minimize cost

Design a dedicated circuit with the correct wire size, breaker size, and grounding, ensuring the system can handle the air conditioner's electrical demands without overloading

Install a shared circuit with other equipment

Use a standard residential circuit without considering load

Question 5: How do you diagnose a ground fault in a 120V circuit?

Which action should you take?

Choose only one option

By inspecting the physical condition of the wiring

By testing between the live wire and the ground conductor

By checking the circuit breaker's trip settings

By measuring the voltage drop across the circuit

Question 6: When troubleshooting an electrical short circuit, what should an Electrician do first?

Which action should you take?

Choose only one option

Replace all wiring without testing

Attempt to reset the circuit breaker before identifying the cause

Disconnect the power, isolate the circuit, and use a continuity tester to find the location of the short

Ignore the short and continue with other tasks