ELECTRICAL CABLES QUIZ

In a cable the voltage stress is maximum at

Sheath

Insulator

Surface of the conductor

Core of the conductor

TRUE ANSWER : ?
YOUR ANSWER : ?

The minimum dielectric stress in a cable is at

Conductor surface

Armour

Bedding

Lead sheath

TRUE ANSWER : ?
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The advantage of oil filled cables is

No ionization, oxidation and formation of voids

Smaller overall size

All of the listed here

More perfect impregnation

TRUE ANSWER : ?
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Dielectric strength of rubber is around

15 kV/mm

25 kV/mm

30 kV/mm

5 kV/mm

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Which of the following protects a cable against mechanical injury?

Armouring

Sheath

None of the listed here

Bedding

TRUE ANSWER : ?
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The disadvantage with paper as insulating material is

It is an organic material

None of the listed here

It has high capacitance

It is hygroscopic

TRUE ANSWER : ?
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The thickness of metallic shielding on cables is usually

40 to 60 mm

3 to 5 mm

0.2 to 0.4 mm

0.04 mm

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PVC stands for

Pressed and varnished cloth

Polyvinyl chloride

Positive voltage conductor

Post varnish conductor

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Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ?

Impregnated paper

Polyvinyle chloride

Vulcanised rubber

Compressed SF6 gas

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High tension cables are generally used up to

33 kV

11 kV

132 kV

66 kV

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