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Electrical Cables

Electrical Cables
In a cable the voltage stress is maximum at

Sheath
Surface of the conductor
Insulator
Core of the conductor

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Electrical Cables
The thickness of the layer of insulation on the conductor, in cables, depends upon

Power factor
Reactive power
Voltage
Current carrying capacity

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Electrical Cables
Copper as conductor for cables is used as

Hard drawn
Hardened and tempered
Alloy with chromium
Annealed

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

Conductor surface
Armour
Insulation layer
Sheath

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Electrical Cables
Cables, generally used beyond 66 kV are

Belted
S.L. type
Armoured
Oil filled

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Electrical Cables
The disadvantage with paper as insulating material is

None of the listed here
It is an organic material
It is hygroscopic
It has high capacitance

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