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Electrical Cables

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

Armouring
Bedding
None of the listed here
Earthing connection

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Electrical Cables
Underground cables are laid at sufficient depth

To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
To avoid being unearthed easily due to removal of soil
To minimize temperature stresses
All of the listed here

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Electrical Cables
In capacitance grading of cables we use a _________ dielectric.

Homogeneous
Hygroscopic
Composite
Porous

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Electrical Cables
The breakdown voltage of a cable depends on

Presence of moisture
Working temperature
All of the listed here
Time of application of the voltage

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Electrical Cables
PVC stands for

Post varnish conductor
Pressed and varnished cloth
Positive voltage conductor
Polyvinyl chloride

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Electrical Cables
The minimum dielectric stress in a cable is at

Bedding
Conductor surface
Armour
Lead sheath

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