ELECTRICAL CABLES QUIZ

The material for armouring on cable is usually

Both Steel tape and Galvanized steel wire

None of the listed here

Steel tape

Galvanized steel wire

TRUE ANSWER : ?
YOUR ANSWER : ?

In the cables, sheaths are used to

Provide enough strength

None of the listed here

Prevent the moisture from entering the cable

Provide proper insulation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Impregnated paper

Compressed SF6 gas

Polyvinyle chloride

Vulcanised rubber

TRUE ANSWER : ?
YOUR ANSWER : ?

If the length of a cable is doubled, its capacitance

Becomes one-fourth

Becomes one-half

Becomes double

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of three core flexible cable the color of the neutral is

Black

Brown

Blue

Red

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following insulation is used in cables?

Rubber

Varnished cambric

Paper

All of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Solid type cables are considered unreliable beyond 66 kV because

Insulation may melt due to higher temperature

Skin effect dominates on the conductor

Of corona loss between conductor and sheath material

There is a danger of breakdown of insulation due to the presence of voids

TRUE ANSWER : ?
YOUR ANSWER : ?

The thickness of metallic shielding on cables is usually

3 to 5 mm

40 to 60 mm

0.2 to 0.4 mm

0.04 mm

TRUE ANSWER : ?
YOUR ANSWER : ?

The advantage of oil filled cables is

No ionization, oxidation and formation of voids

All of the listed here

Smaller overall size

More perfect impregnation

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following protects a cable against mechanical injury?

Armouring

Bedding

None of the listed here

Sheath

TRUE ANSWER : ?
YOUR ANSWER : ?

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