Circuit Breakers

Question 1

Plasma is defined as the state of matter in which electrons are removed from atoms or molecules, creating an electrically conducting gas

True
False

Answer 1

True 

Question 2

The plasma performs what essential function when breaking a circuit?

Flow between two open circuits
Stop the flow
Lowers amps
Raises amps

Answer 2

Flow between two open circuits 

Question 3

Why must the air in the breaker high air pressure system be very dry?

So the volume of air is high
Because it’s the insulating medium between contacts
Because it’s self contained
Because it’s self priming

Answer 3

Because it’s the insulating medium between contacts

Question 4

What is the purpose of the SF6 gas in an air blast circuit breakers?

To cause friction between the contacts
To provide heat transfer
Insulate the support column current
To provide a place to where?

Answer 4

Insulate the support column current

Question 5

The purpose of the blast valve is to blow the arc from the stationary fingers to the arcing probe. It also cools and lengthens the arc so it will be extinguished at the next current zero.

True
False

Answer 5

True