Cable

Which cable component is primarily responsible for providing insulation?

• Conductor

• Sheath

• Insulation

• Armour

What is the typical material used for the armour in 'SWA' cables?

• Copper

• Aluminum

• Steel

• Plastic

For a 3-phase circuit, what is the minimum number of conductors required in a cable?

• 2

• 3

• 4

• 5

What is the primary purpose of the 'sheath' in a cable?

• To conduct electricity

• To provide insulation

• To protect the cable from mechanical damage

• To prevent interference from external sources

Which of the following materials is commonly used for the insulation in cables?

• PVC

• Steel

• Aluminum

• Copper

What is the minimum number of conductors required in a single-phase circuit?

• 1

• 2

• 3

• 4

What is the primary function of the 'armour' in an 'SWA' cable?

• To conduct electricity

• To provide insulation

• To protect the cable from mechanical damage

• To prevent interference from external sources

Which of the following is a characteristic of 'XLPE' insulation compared to 'PVC'?

• Lower cost

• Higher electrical conductivity

• Higher temperature resistance

• More environmentally friendly to produce

What is the primary advantage of using a 'multi-core' cable over a 'single-core' cable?

• Higher electrical conductivity

• Easier to install

• Lower cost

• More flexible

What is the purpose of 'stranding' in a cable conductor?

• To increase the cable's flexibility

• To enhance electrical conductivity

• To improve insulation

• To reduce the cable's cost