141 S23 A

What is the primary purpose of HV switchgear?

• a) To generate electricity
• b) To transmit electricity
• c) To distribute electricity
• d) To control and switch electricity

What is the final stage in the delivery of electricity to end users?

• a) Transmission
• b) Generation
• c) Distribution
• d) Switching

What does LV switchgear manage for consumer use?

• a) Transmission lines
• b) Distribution lines
• c) Step-down transformers
• d) Generators

When dealing with voltages exceeding 1000V AC, what type of switchgear are you typically dealing with?

• a) Low Voltage (LV) switchgear
• b) Medium Voltage (MV) switchgear
• c) High Voltage (HV) switchgear
• d) Extra High Voltage (EHV) switchgear

What is the primary component that interrupts fault currents in a switchgear enclosure?

• a) Transformer
• b) Circuit breaker
• c) Insulator
• d) Generator

How do oil circuit breakers interrupt fault currents?

• a) By vaporizing the oil
• b) By using compressed air
• c) By relying on the dielectric strength of SF6 gas
• d) By elongating the arc using a magnetic field

What is the arc extinguishing medium in a vacuum circuit breaker?

• a) Air
• b) Oil
• c) SF6 gas
• d) Vacuum

How does an air circuit breaker elongate the arc?

• a) By vaporizing the oil
• b) By using a magnetic field
• c) By relying on the dielectric strength of SF6 gas
• d) By using compressed air

What type of switchgear combines the components of traditional air-insulated switchgear?

• a) Oil switchgear
• b) Gas switchgear
• c) Hybrid switchgear
• d) Vacuum switchgear

What do breakers that use carbon dioxide as the insulating and arc extinguishing medium work on the same principles as?

• a) Oil breakers
• b) Air breakers
• c) Vacuum breakers
• d) SF6 breakers