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ELECTRICAL CABLES

Electrical Cables
The bedding on a cable consists of

Hessian cloth
None of the listed here
Both Hessian cloth and Jute
Jute

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Electrical Cables
Dielectric strength of rubber is around

25 kV/mm
15 kV/mm
30 kV/mm
5 kV/mm

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Electrical Cables
Underground cables are laid at sufficient depth

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

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Electrical Cables
The insulating material for a cable should have

low cost
All of the listed here
High mechanical strength
High dielectric strength

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Electrical Cables
In the cables, the location of fault is usually found out by comparing

The resistance of the conductor
The capacitances of insulated conductors
The inductance of conductors
All of the listed here

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