3-2

Question 1

The IBEW electrical construction industry is known as the ______________ industry

Answer 1

C. Strike less

Question 2

The _______ system is used when an informed neutral party analyzes the conditions and through persuasion bring the parties together

Answer 2

C. Mediation

Question 3

Labor, peace, and better conditions for all can be a result when _________ is exercised in negotiations

Answer 3

C. Good faith

Question 4

Bodily Injury is the result of the current level and and ___________.

Answer 4

C. Duration of current flow

Question 5

Body current will flow inside the body when ______.

Answer 5

D. Voltage punctures the skin

Question 6

Low levels of current flowing through the body for an extended period of time can result in __________.

Answer 6

A. Fibrillation

Question 7

If the voltage and resistance of a circuit are known, what formula can be used to find current flow?

Answer 7

A. e/r=i

Question 8

The primary characteristic of a _______ circuit, is that it has multiple paths of current flow.

Answer 8

B. parallel

Question 9

When resisters are in series they are ______.

Answer 9

A. added to equal the total resistance.

Question 10

A worker making contact with 4,160 volts and with body resistance of 700 ohm will have ________ amps of current passed through his body.

Answer 10

B 6

Question 11

Most historical approaches to personal protective grounding were ________.

Answer 11

B. Not effective

Question 12

When using separate grounding connections to earth _______.

Answer 12

A. an equal potential zone will be created

Question 13

The great myth about grounding is that a connection to earth ________.

Answer 13

B. is a connection to 0 volts

Question 14

An equal potential zone works by placing a _______ in parallel with the worker

Answer 14

C. low resistive shunt

Question 15

An equal potential zone limits the _______ across the worker

Answer 15

D. Voltage

Question 16

The equal potential zone ground cable is called a ______ when it is apart of the bracket grounding scheme

Answer 16

C. Personal protective jumper

Question 17

When an electrical worker is working in an equal potential zone, a pole ground ______.

Answer 17

B. Must be avoided

Question 18

A ground should be sized to carry _____ current as long a the circuit is energized

Answer 18

C. fault

Question 19

A _____ provides stress relief for the grounding cable.

Answer 19

A. Cable ferrule

Question 20

In the placement of grounds, knowledge of ________ helps the worker understand his place in the circuit.

Answer 20

A. Basic circuits

Question 21

A personal protective grounds are ________ then the safety of the worker is in jeopardy.

Answer 21

A. Installed in the incorrect order

Question 22

The first step, when installing grounds, is to _______

Answer 22

D. Test the line for the absence of voltage

Question 23

A low resistance return path is the ______.

Answer 23

D. neutral conductor

Question 24

When ______ flows through a resister, a voltage drop across the resister develops.

Answer 24

B. Current

Question 25

Under fault conditions, as a worker gets closer to the connection point where the ground rod is driven, a difference of potential will rise between the workers __________ and _________.

Answer 25

A. foot / foot

Question 26

One way for a worker to protect himself is to establish an equal potential zone using ________.

Answer 26

D. Portable ground mat

Question 27

The voltage drop across the earth decreases by about ______ for two to three feet.

Answer 27

D. 50 percent

Question 28

A de-energized and isolated line may be charged with _______ without current flow

Answer 28

C. induced voltage

Question 29

A ______ can be induced by when?

Answer 29

D. static charge.

Question 30

Induced current accidents are so common because of the use of _______

Answer 30

D. Multiple grounds.

Question 31

A driven ground rod may help a circuit trip and provides _______ for the worker around the truck.

Answer 31

C. no protection

Question 32

During maintenance work, _______ grounds between trucks and lines, and driven ground should be used.

Answer 32

A. common

Question 33

By using a ground mat, a _______ can be created around a pad mount switches and transformers

Answer 33

C equal potential zone

Question 34

A good rule for URD work is to not depend on _______

Answer 34

D. All of the above

Question 35

Large fault current levels in substations require_______

Answer 35

B larger clamps and cables

Question 36

Substation grounding equipment selection is a major consideration because a _______

Answer 36

A higher fault current levels

Question 37

Closed spacing between energized and de-energized equipment creates _______

Answer 37

C. induced voltages and currents.

Question 38

Personal protective grounding during constructions activities become more difficult on the work site because _______

Answer 38

D. all of the above

Question 39

While working around vehicles or stringing equipments, grounding mats are preferred over rubber gloves insulating mats and boots because _______

Answer 39

D. the voltage can exceed the rating on the insulating items

Question 40

The touch potential hazard can be very high around a _______ that becomes energized

Answer 40

D. all of the above

Question 41

The type of soil and _______ influence the resistance of the earth

Answer 41

D. both A and B

Question 42

The earth's ground resistance increases when _______

Answer 42

A. the moisture in the earth freezes

Question 43

The national electric code states that a ground rod should have less than _______ ohms resistance

Answer 43

C. 25

Question 44

Lightening can be _______ of volts

Answer 44

C. millions

Question 45

The _______ housing of a lightening arrester reduces the damaging effect in case of failure.

Answer 45

D. polymer

Question 46

The metal oxid arrester does not have _______ between the valves

Answer 46

A. gaps

Question 47

A dead front lightening arrester would be used on a _______

Answer 47

C underground distribution