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Electrical Cables

Electrical Cables
In a cable immediately above metallic sheath ________ is provided.

Bedding
None of the listed here
Earthing connection
Armouring

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Electrical Cables
The minimum dielectric stress in a cable is at

Armour
Conductor surface
Bedding
Lead sheath

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Electrical Cables
If the length of a cable is doubled, its capacitance

Becomes one-fourth
None of the listed here
Becomes double
Becomes one-half

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Electrical Cables
In a cable, the maximum stress under operating conditions is at

Conductor surface
Insulation layer
Armour
Sheath

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Electrical Cables
The insulating material for cables should

All of the listed here
Be acid proof
Be non-inflammable
Be non-hygroscopic

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Electrical Cables
The advantage of oil filled cables is

More perfect impregnation
Smaller overall size
All of the listed here
No ionization, oxidation and formation of voids

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