Preview Questions Electrician | Role Specific Skill

Question 1: When designing a circuit for an industrial machine, what is the key consideration for selecting wire insulation?

Which action should you take?

Choose only one option

The material and temperature rating of the insulation to prevent overheating and wear

The brand name of the wire

The length of the wire to reduce costs

The color of the insulation for easy identification

Question 2: According to the National Electrical Code (NEC), what is the maximum allowable voltage for a Class 1 low-voltage circuit?

Which action should you take?

Choose only one option

100V

50V

12V

24V

Question 3: How can an Electrician ensure that electrical systems are properly grounded during installation?

Which action should you take?

Choose only one option

Skip grounding and assume safety

Use dedicated grounding conductors and ensure all equipment and system components are properly bonded to the ground to reduce the risk of electrical shock

Use any available metal surfaces for grounding

Ground systems to non-conductive surfaces

Question 4: What diagnostic approach should an Electrician take when a circuit breaker is tripping during a new installation?

Which action should you take?

Choose only one option

Use an oversized breaker to prevent tripping

Test the wiring for short circuits, check the load calculation, and verify that the breaker is appropriately sized for the circuit

Replace the breaker without checking the wiring

Ignore the tripping and assume the breaker is faulty

Question 5: What is the correct procedure for installing a three-phase electrical system in a commercial building?

Which action should you take?

Choose only one option

Use unbalanced phases for cost-saving

Use a single-phase system for simplicity

Install the three-phase wiring with balanced load distribution, ensuring that all three phases are properly connected and the system is correctly grounded

Ignore the need for balancing the phases

Question 6: How should an Electrician ensure that electrical wiring complies with energy efficiency standards in new installations?

Which action should you take?

Choose only one option

Use non-compliant wiring to save on installation costs

Design and install wiring with consideration for energy-efficient systems, using low-voltage lighting and energy-efficient devices, and following all applicable codes for energy savings

Focus only on aesthetic placement and disregard energy standards

Use only standard wiring techniques