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ELECTRICAL CABLES

Electrical Cables
The breakdown voltage of a cable depends on

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

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Electrical Cables
High tension cables are generally used up to

132 kV
33 kV
11 kV
66 kV

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Electrical Cables
Low tension cables are generally used up to

200 V
1000 V
400 V
600 V

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Electrical Cables
The breakdown of insulation of the cable can be avoided economically by the use of

Inter-sheaths
Both Inter-sheaths and Insulating materials with different dielectric constants
Insulating materials with different dielectric constants
None of the listed here

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

Armour
Conductor surface
Insulation layer
Sheath

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