Preview Questions Substation Technician | Role Specific Skill

Question 1: What is the minimum requirement for personal protective equipment (PPE) when working with energized equipment?

Which action should you take?

Choose only one option

Insulated gloves, safety boots, and a face shield

Insulated gloves, flame-retardant clothing, and a hard hat

Insulated gloves, dielectric boots, and safety goggles

Insulated gloves, flame-retardant clothing, and hearing protection

Question 2: How do you ensure proper load balancing across transformers in a substation?

Which action should you take?

Choose only one option

By assuming all transformers have equal load and ignoring measurements

By measuring the load on each transformer, adjusting the tap changer settings, and balancing the load evenly

By focusing only on the overall system load without individual transformer checks

By excluding load balancing from routine maintenance checks

Question 3: How can electromagnetic interference (EMI) be mitigated in substation equipment?

Which action should you take?

Choose only one option

By minimizing the number of components in the circuit

By using proper shielding and grounding methods

By reducing the frequency of electrical pulses

By increasing insulation on the equipment

Question 4: What is your method for troubleshooting an issue where a transformer is overheating during operation?

Which action should you take?

Choose only one option

By replacing the transformer without further tests

By checking the oil temperature, performing a load test, and verifying the cooling system operation

By ignoring the transformer's cooling system and assuming external conditions are responsible

By reducing the load and assuming the transformer will return to normal

Question 5: How do you test the current transformer (CT) accuracy in a substation?

Which action should you take?

Choose only one option

By applying a known current and measuring the output to compare with the transformer's rated accuracy class

By measuring the physical condition of the CT only

By ignoring the accuracy test if the CT shows no visible damage

By checking the connection of the CT to the protection relay

Question 6: What is the purpose of testing a circuit breaker's trip time, and how is it done?

Which action should you take?

Choose only one option

To check the mechanical operation of the breaker without electrical testing

To verify the breaker's physical condition only

To ensure the breaker opens within the specified time under fault conditions, done by applying test current and measuring the time

To measure the temperature of the breaker and assume it will trip on time