Topic 4 - Power Cable

The process of dividing the conductor into a number of smaller wires is called

• Slicing stranding
• Splitting
• Stranding
• Tearing

Which is not a reason why conductors are often stranded?

• Flexibility
• Ease of handling
• Increase the diameter of the cable
• Reduce the build up of magnetic field around cables.

The insulation of the stranded copper conductor is made of

• PVC
• Copper
• Aluminium
• Thermoplastic

What type of flexible cord is suitable for appliances that might become hot and burn or melt the normal flexible cord?

• Cotton Braided Flexible Cord
• PVC sheathed flexible Cord
• Heat-Resistant Braided Flexible Cord
• PVC insulated steel wire armour cable

The basic purpose of an electrical power cable is to

• transport electrical energy from the source to another
• transport potential energy from one source to another.
• transport chemical energy from one source to another
• transport mechanical energy from one source to another

The colour of neutral in a 3-core flexible cable is

• Blue
• Black
• Brown
• Green with yellow stripe

Which component of the 3 pin plug is used for protection against electrical faults such as a current surge?

• Fuse

• Insulator

• Plastic Holder

• Flexible cord

Which wire of the 3-pin plug protects the user from electric shocks in the event that an electrical fault causes the appliance to be live?

• Earth wire
• Live wire
• Neutral wire
• Brown wire

What fuse rating is used on a 3 pin plug for our home electrical appliances such as refrigerators, washing machines and microwave ovens?

• 6 Amp
• 13 Amp
• 15 Amp
• 20 Amp

An electrical cable is made up of three parts which are

• conductors and insulators
• heating, magnetic and chemical
• conductor, convention and radiation
• conductor, insulation and outer shealth