Preview Questions Substation Technician | Role Specific Skill

Question 1: How do you diagnose a fault in the grounding system of a substation when there are frequent tripping events?

Which action should you take?

Choose only one option

By measuring the ground resistance, inspecting ground connections, and verifying compliance with grounding standards

By replacing the grounding rods without conducting a full test

By assuming the tripping is unrelated to grounding and checking breakers

By ignoring ground resistance testing and checking only breaker settings

Question 2: How does current transformer testing relate to circuit breaker functionality?

Which action should you take?

Choose only one option

It ensures that the transformer can handle overloads

It measures the power factor of the transformer

It checks the voltage regulation capabilities of the transformer

It ensures the current transformers provide accurate signals to the trip unit for proper protection operation

Question 3: How do you test the mechanical operation of a circuit breaker during routine maintenance?

Which action should you take?

Choose only one option

By testing the breaker only under fault conditions

By observing the breaker's external operation without testing

By manually operating the breaker and checking its response time, movement, and proper alignment

By focusing only on the electrical components and ignoring mechanical parts

Question 4: What is the purpose of grounding a transformer during maintenance work?

Which action should you take?

Choose only one option

To prevent electric shock hazards by directing fault currents to the ground

To ensure smooth operation of the transformer under load conditions

To prevent overcurrent conditions during the work

To ensure proper voltage regulation during maintenance

Question 5: What is the likely cause if a transformer shows an abnormal increase in temperature during normal operation?

Which action should you take?

Choose only one option

Fault in the transformer's insulation system

Transformer windings experiencing electrical stress

Faulty protection relay settings

Low oil levels or poor cooling conditions

Question 6: What is the purpose of remote control testing for circuit breakers in a substation?

Which action should you take?

Choose only one option

To measure the temperature of the breaker's casing

To monitor the current passing through the breaker during operation

To verify that the breaker can be operated remotely without failure or delay

To check the mechanical alignment of the breaker