Quiz on Types of Cable Installations in Electrical Networks

What is one advantage of open-wire construction?

• Low initial cost

• Requires extensive maintenance

• High reliability

• High safety hazard

Which type of cable installation is used for greater safety and reliability?

• Underwater Cable

• Open-Wire

• Direct Burial

• Aerial Cable

What is a disadvantage of aerial cables?

• Not suitable for wet areas

• High installation cost

• Cannot be used in urban areas

• Requires proper vertical clearances

What type of conduit provides the highest degree of mechanical protection?

• Plastic conduit

• Thin-wall EMT

• Rigid steel conduit

• Fiber conduit

Which installation method is suitable for areas that are rarely disturbed?

• Aerial Cable

• Above-Ground Conduits

• Direct Burial

• Underground Ducts

What is a key feature of submarine cables?

• They are less expensive than aerial cables

• They must cross expanses of water

• They are used only in urban areas

• They are always unarmored

What is the purpose of grounding cable systems?

• To increase installation costs

• To prevent mechanical damage

• To ensure safety and reliable operation

• To reduce the weight of cables

What type of cables must be used in underground ducts?

• Cables that are easily damaged

• Cables with low current capacity

• Cables resistant to moisture and abrasion

• Cables suitable for dry areas

What is a characteristic of direct burial cables?

• They cannot be added to or maintained easily

• They are used in all types of weather

• They are always insulated

• They require extensive maintenance

What is the main purpose of the grounding conductor in cable systems?

• To increase the weight of the cable

• To reduce installation time

• To provide a fault return path

• To insulate the cable from moisture