underground power cables

Question 1

If the electric field becomes concentrated in any one point of a cable insulation, the electrical stress in that location will lead to ?

Answer 1

eventual insulation failure

Question 2

A layer of ? on the inside and outside of the insulation spreads the electric field uniformly.

Answer 2

semi-conducting material

Question 3

When making splices or terminations, any damage done while stripping the insulation shield from the insulating layer could result in a phenomenon called ? , which could eventually damage the cable.

Answer 3

partial discharge

Question 4

Moisture can enter where the cable is cut during installation or during storage and cause premature failure due to ?

Answer 4

water treeing

Question 5

The metallic shield of a cable can serve as a path for the return current (neutral) and fault current.

Answer 5

true

Question 6

When a cable jacket is applied over the metallic shield, it is used to provide an improved return path (neutral) for extra conductivity.

Answer 6

false

Question 7

A splice kit specification describes the sleeve, dies, and ? that should be used on a splice joint.

Answer 7

press

Question 8

To locate a cable using a typical cable locator, a ?

Answer 8

receiver with a directional antenna is swept from side to side

Question 9

When splicing a cable, the cable is reconstructed so a conductor shield, an insulation shield, a neutral, and a jacket are all installed in a manner so there will be no added concentration of electrical stress on the insulation.

Answer 9

true

Question 10

Semi-conducting tape must not touch the conductor when making a splice.

Answer 10

false

Question 11

It is hazardous to touch a cable after a high voltage test has been completed because a cable is basically a ? and will have voltage on it after a high voltage test is completed.

Answer 11

capacitor