Preview Questions Electrical Technician | Role Specific Skill

Question 1: How do you verify the correct operation of an electrical relay during maintenance?

Which action should you take?

Choose only one option

Check the coil voltage

Test the contacts with a continuity tester

Measure the current across the contacts

Inspect the mechanical operation visually

Question 2: What does a high resistance reading on a ground continuity test indicate in a troubleshooting scenario?

Which action should you take?

Choose only one option

Broken grounding wire

Grounding electrode is corroded

A connection to a floating ground

The grounding system is correctly installed

Question 3: When installing electrical systems in a potentially explosive environment, what is the required compliance for equipment?

Which action should you take?

Choose only one option

Use explosion-proof equipment rated for the specific hazardous area classification

Use standard equipment with added protective coatings to reduce risks of sparks

Use ungrounded systems to prevent short circuits in explosive areas

Only install battery-powered equipment to minimize potential ignition sources

Question 4: How do you determine the size of the grounding conductor during equipment installation?

Which action should you take?

Choose only one option

Based on NEC or IEC guidelines

Based on installation environment

Based on equipment voltage rating

Based on conductor material

Question 5: How would you troubleshoot a light fixture that flickers intermittently despite having a working bulb?

Which action should you take?

Choose only one option

Use a clamp meter to check for current fluctuations at the fixture

Verify that the fixture is correctly grounded

Check the wiring connections for loose or faulty terminals

Inspect the circuit breaker for signs of overload

Question 6: When troubleshooting a low power condition in a large electrical panel, which component should be checked first?

Which action should you take?

Choose only one option

Breakers connected to the main distribution panel

Capacitors and power factor correction devices

Voltage regulator

Main incoming fuses