Overhead Line Design Quiz

Which component is made of metal cables used for carrying electric current?

• Insulators

• Conductors

• Structures

• Foundation

What does the spacing of overhead line conductors depend on?

• Color of the conductor

• Length of the conductor

• Sag

• Material of the conductor

What property do insulators have compared to conductors?

• Lower resistivity

• Higher resistivity

• Same resistivity

• No resistivity

Why are insulators used in electrical equipment?

• To conduct electricity

• To support and separate conductors without current passing through them

• To generate electricity

• To increase current flow

Which of the following is NOT an insulator?

• Plastic

• Ceramic

• Copper

• Paper

What is the purpose of high electrical resistance in insulators?

• To allow current to pass

• To avoid leakage currents to earth

• To increase current flow

• To decrease voltage

What do insulators do to electric current?

• Allow it to flow

• Obstruct its flow

• Increase its flow

• Decrease its flow

Where are pin insulators secured?

• On the ground

• To the cross-arm on the pole

• Inside a building

• On a tree

What are suspension insulators made of?

• Metal rods

• Porcelain discs

• Plastic sheets

• Wooden planks

What happens if the voltage level increases in a suspension insulator?

• Fewer discs are needed

• More discs are needed

• The same number of discs is used

• The discs change color