2-5-3

Question 1

There are __?__ shapes of stranded conductors most common used in cable.

Answer 1

5

Question 2

There is no such type stranded conductor used in cables as an annular conductor; this is strictly an overhead type.

Answer 2

false

Question 3

The advantages of using a compact round conductor instead of a concentric round conductor are that the compact has a smaller outside diameter and the cable will __?__ than the concentric round.

Answer 3

weigh less

Question 4

The three main categories of cable insulation include thermosetting, thermoplastic, and __?__.

Answer 4

laminated

Question 5

One advantage of impregnated paper insulation is that it has good frequency stability.

Answer 5

false

Question 6

Another advantage of impregnated paper insulation is that it has good electrical properties such as high dielectric strength, low power factor, and low __?__.

Answer 6

dielectric loss

Question 7

The ratio of capacitance is the ability of material to hold a charge compared to the capacitance of __?__.

Answer 7

air

Question 8

The __?__ is the ratio of capacitance on two conducting surfaces with air as the dielectric insulating material used between the surfaces.

Answer 8

dielectric constant

Question 9

There are __?__ types of extruded insulation used in cable manufacturing listed in the reference materials.

Answer 9

8

Question 10

Cross-linked polyethylene insulation has a superior resistance to heat deformation and environmental stress cracking.

Answer 10

true

Question 11

The tape used for the insulation of metallic shield can also be used as a ground to carry a potential fault current.

Answer 11

false

Question 12

The purpose of the metallic shield is to __?__ inside the cable.

Answer 12

contain and equalize the electrical field

Question 13

The electrical grounding braid used to ground a splice or termination has a high current carrying capacity equal to that of a # __?__ AWG wire.

Answer 13

6

Question 14

The purpose of the __?__ is to provide mechanical protection and, in some cases, electrical protection: a path for current return.

Answer 14

cable jacketing

Question 15

The advantage of using lead sheathing is that it is the most effective protection for insulation against moisture, weather, and __?__.

Answer 15

oxidiation

Question 16

The cable cleaning kit used to clean the insulation of the solid dielectric cable will help prevent tracking on the insulation and also leaves a tacky surface to help secure the semi-conductor tape which is applied on the insulation after it has been cleaned.

Answer 16

false

Question 17

Calipers used in cable splicing measure the __?__ thickness.

Answer 17

insulation

Question 18

A knife is a tool frequently used by a cable splicer, one job that can be performed with a knife is cutting and penciling the insulation.

Answer 18

true

Question 19

The cable metallic shielding can be soldered using an electric soldering iron, soldering tips, or a __?__ soldering iron.

Answer 19

propane

Question 20

You should always use a lead pencil when marking your cable because the lead in a lead pencil is very conductive and will help make a better splice.

Answer 20

false

Question 21

A small __?__ can be used in preparing a cable end because it will allow you to make a straight cut on the insulation and you can control how deep your blade is cutting.

Answer 21

tubing cutter

Question 22

To ring cut the cable insulation and help prevent damaging the cable conductor, you can use a piece of __?__.

Answer 22

cotton string

Question 23

When using a torch for shrinking a heat shrink termination or splice, the flame should be adjusted to provide an overall __?__ inch bushy flame. Use the yellow tip for shrinking.

Answer 23

12

Question 24

Electric cords used on the job must be of the three-prong type.

Answer 24

true

Question 25

Live-line tools used for primary employee protection must be removed from service every __?__ years, or whenever a defect is discovered, for examination, cleaning, repair, and testing.

Answer 25

2