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Electrical Cables

Electrical Cables
The minimum dielectric stress in a cable is at

Armour
Bedding
Lead sheath
Conductor surface

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

Armouring
Sheath
Bedding
None of the listed here

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Electrical Cables
If the length of a cable is doubled, its capacitance

Becomes one-fourth
None of the listed here
Becomes one-half
Becomes double

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Electrical Cables
A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become

Four times
Double
None of the listed here
One half

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Electrical Cables
The bedding on a cable consists of

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

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Electrical Cables
Conduit pipes are normally used to protect ________ cables.

All of the listed here
Armoured
Unsheathed cables
PVC sheathed cables

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