Electrical Cable Components and Properties

The video tutorial explains the process of manufacturing electrical wires and cables. It begins with an introduction to the presence of electrical wires in daily life. The manufacturing process is detailed, starting from rods being drawn into wires, twisted to form conductors, and insulated with materials like polyethylene or PVC. The video also covers the testing of cables for voltage capacity and quality assurance before they are shipped to clients.

What are the common forms of electrical wires mentioned in the video?

• Motors, switches, and relays

• Aerials, underground cables, and electrical appliances

• Solar panels, batteries, and generators

• Transformers, resistors, and capacitors

What materials are used to make the rods for electrical wires?

• Gold and silver

• Steel and iron

• Copper and aluminum

• Nickel and zinc

What is the diameter of the rod after it has been drawn out and thinned?

• 2 mm

• 1 mm

• 3 mm

• 5 mm

What process is used to ensure an uninterrupted flow of wire from the bobbins?

• Cold welding

• Hot welding

• Brazing

• Soldering

What material is used to insulate the conductors?

• Polyethylene or PVC

• Rubber

• Silicone

• Fiberglass

How is the diameter of the insulated conductor checked?

• Using a caliper

• Using a precision laser

• Using a micrometer

• Using a ruler

What is applied to identify different conductors when they are twisted together?

• A colored tape

• A white stripe

• A metal tag

• A barcode

What voltage range can medium voltage cables carry?

• 1,000 to 46,000 volts

• 50,000 to 500,000 volts

• 100 to 1,000 volts

• 10,000 to 100,000 volts

What information is printed on the cables before they are shipped?

• Date of manufacture, voltage, and client information

• Length, weight, and color

• Material composition, diameter, and resistance

• Temperature rating, flexibility, and insulation type

What is found at the heart of the electrical cable?

• A steel rod

• A fiber optic strand

• A plastic core

• The bare conductor