EMC Chapter 4

Question 1

___ is not an effect of electrical shock

Answer 1

Dehydration

Question 2

The ___ approach boundary is the distance from an exposed energized conductor or circuit part where an increased risk of electric shock exists due to the close proximity of the person to the energized conductor or circuit part.

Answer 2

restricted

Question 3

___ causes electrons from one source to flow to another material, causing an electron buildup (negative static charge)

Answer 3

Friction

Question 4

A(n)___ signal word is a word used to indicate a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Answer 4

warning

Question 5

A(n)___ signal word is used to indicate an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Answer 5

danger

Question 6

Electrical power must be ___ when electrical equipment is inspected, serviced, or repaired.

Answer 6

removed

Question 7

___ is the process of removing the source of electrical power and installing a lock which prevents the power from being turned on.

Answer 7

Lockout

Question 8

___ is the process of placing a danger tag on the source of electrical power, which indicates that the equipment may not be operated until the danger tag is removed.

Answer 8

Tagout

Question 9

A ___ tag has the same importance as a lock and is used alone only when a lock does not fit the disconnect device.

Answer 9

danger

Question 10

A(n)___ should b used when more than one technician is required to perform a task on a piece of equipment.

Answer 10

hasp

Question 11

An ___ is an extremely high-temperature discharge produced by an electrical fault in the air.

Answer 11

arc flash

Question 12

The ___ boundary is the distance from exposed energized conductors or circuit parts where bare skin would receive the onset of a second-degree burn.

Answer 12

arc flash

Question 13

Class ___ protective helmets protect against impact and voltage up to 20k V.

Answer 13

E

Question 14

___ are not considered eye protection.

Answer 14

Prescription glasses

Question 15

___ protectors are worn over rubber insulating gloves to prevent penetration of the rubber insulating gloves

Answer 15

Leather

Question 16

___ injuries are the result of improper lifting.

Answer 16

Back

Question 17

___ insulating matting is a floor covering that provides technicians protection from electrical shock when working on live circuits.

Answer 17

Rubber

Question 18

When removing fuses, use an approved fuse puller and break contact on the ___ side of the circuit first.

Answer 18

Line

Question 19

Grounding is the connection of all exposed non-current carrying metal parts to ___.

Answer 19

Earth

Question 20

A ___ is a device that protects against electrical shock by detecting an imbalance of current in the normal conductor pathways and opening the circuit.

Answer 20

Ground fault circuit interrupter

Question 21

Oily waste cans seal out ___ to prevent spontaneous combustion.

Answer 21

oxygen

Question 22

Class ___ fires include burning electrical devices, motors, and transformers

Answer 22

C

Question 23

___ is not required to start a fire.

Answer 23

Carbon Dioxide

Question 24

Fire extinguishers are normally painted red, but can also be painted ___.

Answer 24

yellow

Question 25

Fire extinguisher should be inspected at least once a ___.

Answer 25

month

Question 26

A(n)___ space is a space large enough and so configured that an employee can physically enter and perform assigned work, that has limited or restricted means for entry and exit, and is not designed for continuous employee occupancy.

Answer 26

confined

Question 27

Air normally contains ___% oxygen.

Answer 27

21

Question 28

All canceled entry permits must be filed for at least ___ year(s)

Answer 28

one

Question 29

Overhead power line conductors ___ V or higher are usually bare (uninsulated), while low-voltage systems such as service drops to buildings consists of insulated conductors.

Answer 29

600

Question 30

Per NFPA 70 E, if the line voltage exceeds 50 kV, the minimum overhead line clearance for all nonqualified individuals is ___ ‘plus 4” for every 10 kV over 50kV

Answer 30

10

Question 31

A(n)___ is a temporary or movable platform and structure for workers to stand on when working at a height above the floor.

Answer 31

scaffold