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Types of Electric Cables

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Questions and Answers

What is a characteristic of the insulation used in weather-proof cables?

It is made of copper
It is made of cotton or silk
It is made of polyvinyl chloride (PVC)
It is made of vulcanized rubber (correct)

What is the main advantage of flexible cords over other types of wires?

They are more resistant to moisture
They are less expensive
They are more flexible (correct)
They are more durable

Which type of wire is least used for transmission of electrical energy?

Flexible cord
Steel wire (correct)
Aluminium wire
Copper wire

What is the primary material used in ACSR wires?

Aluminium (A) Signup and view all the answers

What is the main purpose of hook up wires?

For electronic circuit wiring (A) Signup and view all the answers

What is a characteristic of copper wires?

They have high tensile strength (B) Signup and view all the answers

What is the primary purpose of the cotton tape in a V.I.R cable?

To provide mechanical protection (A) Signup and view all the answers

What is the primary advantage of P.V.C insulation over vulcanized rubber insulation?

It is more resistant to acid and alkali (D) Signup and view all the answers

Why is tinned copper or aluminium not used in P.V.C cables?

Because it is not necessary due to the hard P.V.C insulation (A) Signup and view all the answers

What is the main difference between C.T.S and V.I.R cables?

The type of protective covering used (A) Signup and view all the answers

What is the primary limitation of P.V.C cables?

They are not suitable for high-temperature applications (C) Signup and view all the answers

What is the primary application of V.I.R cables?

In casing, capping, conduits, and temporary light wirings (A) Signup and view all the answers