Substation Operator Quiz

What is the role of a substation operator as per CEA regulations?

• Must hold ITI certificate

• Must hold a Diploma or Degree in Engineering

• Only basic electrical knowledge is enough

• Not specified

Which of the following is a soft skill required for a substation operator?

• Welding

• Ladder climbing

• Telephone etiquette

• Driving skills

During shift takeover, what must the operator verify first?

• Logbook of previous shift

• Breaker manual

• Relay testing report

• Grid frequency

In which color should a tripping entry be made in the operator's diary?

• Blue

• Red

• Green

• Black

What is the full form of 'NBC' in substation operations?

• Network Bypass Control

• Non Back Feeding Certificate

• Normal Bus Control

• None of the above

Which type of transformer is commonly used to step down 110 kV to 11 kV?

• Distribution Transformer

• Power Transformer

• Isolation Transformer

• CVT

What is a PS class CT used for?

• Metering

• Lighting

• Special protection like REF or Differential

• Voltage control

What type of gas is used in SF6 circuit breakers?

• Nitrogen

• Air

• Sulphur Hexafluoride

• Hydrogen

Which of the following is not a method of arc extinction?

• Lengthening arc

• Splitting arc

• Arc polishing

• Cooling arc

What is the accuracy class of a protection CT marked 5P20?

• 5% error at 10x current

• 5% error at 20x current

• 10% error at 5x current

• 20% error at 5x current