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Electrical Cables

Electrical Cables
The surge resistance of cable is

5 ohms
500 ohms
50 ohms
100 ohms

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Electrical Cables
Cables for 220 kV lines are invariably

Rubber insulated
Mica insulated
Compressed oil or compressed gas insulated
Paper insulated

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

Insulation layer
Armour
Conductor surface
Sheath

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Electrical Cables
The inter sheaths in the cables are used to

Avoid the requirement of good insulation
Minimize the stress
Provide proper stress distribution
None of the listed here

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Electrical Cables
High tension cables are generally used up to

132 kV
66 kV
11 kV
33 kV

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Electrical Cables
Which of the following protects a cable against mechanical injury?

Bedding
Armouring
Sheath
None of the listed here

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