Circuit Breakers

Current Limiting Reactors maybe

• Air-cooled, air-cored

• Oil-immersed, magnetically shielded

• Oil-immersed, non-magnetically shielded

• All of these

Switching surges may be caused by

• Closing of uncharged line

• Lightning line

• Load shred line

• Voltage oscillation

Overvoltage transient may occur due to _____

If the power factor is zero, _________ voltage will be maximum

"Kick fuse" has

Answer explanation

Inverse characteristics

What is the name for this type of Circuit Breaker?

Answer explanation

3 pole miniature circuit breaker

Which of the following circuit breaker is installed on 400 kV line?

• Tank Type Circuit Breaker

• Non-Airblast Circuit Breaker

• Airblast Circuit Breaker

• Mage type Circuit Breaker

Interrupting medium in a contactor may be _____

sF6 gas has density ___ times as compared to that of air

The insulation resistance of a high voltage circuit breaker is ______