ELEC 269 Quiz 3 Review

What does SPDT mean?

• Single Ply Double Twist

• Singular Pole Dual Throw

• Single Pole Double Throw

• Swift Piezo Dielectric Throw

What type of switch is this?

• Single Pole Single Throw

• Single Pole Double Throw

• Double Throw Single Pole

• Double Throw Double Pole

What type of switch is this?

• Single Pole Single Throw

• Single Pole Double Throw

• Double Pole Single Throw

• Double Pole Double Throw

What type of switch is this?

• Single Pole Single Throw

• Single Pole Double Throw

• Double Pole Single Throw

• Double Pole Double Throw

What type of switch is this?

• Single Pole Single Throw

• Single Pole Double Throw

• Double Pole Single Throw

• Double Pole Double Throw

What does DPST-NO mean?

• The switch is normally closed

• The switch is never open

• The switch is normally open

• The switch has two positions

Which switch is -NO?

• A

• B

• both

• neither

Which switch is -NC?

• A

• B

• both

• neither

When we actuate a switch what might be an issue?

• Initial current draw of some loads

• Arcing

• Stored magnetic energy in coils

• All of these

How do we protect the switch from these?

• Use a switch rated for the circuit's current

• Use a switch rated for double the circuit's current

• Use a switch with adjusted with a derating factor

• Use a switch with an inductive ceramic isolator