ELECTRICAL CABLES QUIZ

Solid type cables are considered unreliable beyond 66 kV because

Of corona loss between conductor and sheath material

Insulation may melt due to higher temperature

Skin effect dominates on the conductor

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

TRUE ANSWER : ?
YOUR ANSWER : ?

In capacitance grading of cables we use a _________ dielectric.

Porous

Homogeneous

Composite

Hygroscopic

TRUE ANSWER : ?
YOUR ANSWER : ?

The disadvantage with paper as insulating material is

It is hygroscopic

It has high capacitance

None of the listed here

It is an organic material

TRUE ANSWER : ?
YOUR ANSWER : ?

Empire tape is

Vulcanized rubber

None of the listed here

Varnished cambric

Impregnated paper

TRUE ANSWER : ?
YOUR ANSWER : ?

High tension cables are generally used up to

66 kV

11 kV

33 kV

132 kV

TRUE ANSWER : ?
YOUR ANSWER : ?

The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to

None of the listed here

Nonexistence of any stability limit

Absence of harmonics

Smaller dielectric loss

TRUE ANSWER : ?
YOUR ANSWER : ?

PVC stands for

Post varnish conductor

Pressed and varnished cloth

Positive voltage conductor

Polyvinyl chloride

TRUE ANSWER : ?
YOUR ANSWER : ?

Dielectric strength of rubber is around

30 kV/mm

5 kV/mm

25 kV/mm

15 kV/mm

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following insulation is used in cables?

Paper

Varnished cambric

All of the listed here

Rubber

TRUE ANSWER : ?
YOUR ANSWER : ?

In a cable immediately above metallic sheath ________ is provided.

Bedding

Earthing connection

Armouring

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

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