Question 1

Dry chemical fire extinguishers can be used on Class __________ fires.

Accepted Answer

Dry chemical fire extinguishers can be used on Class A, B, and C fires, making them a versatile option for most types of fires. Class A fires involve ordinary combustibles such as wood, paper and cloth, Class B fires involve flammable liquids and gases, and Class C fires involve electrical equipment. However, dry chemical fire extinguishers may not be the best solution for fires involving sensitive electronics or food service areas, as the powder can be corrosive and leave a residue. Water or CO2 extinguishers may be better options in those situations.

Question 2

Fires that occur with flammable liquids, such as gasoline, oil, grease, paints, and thinners are Class __________ fires.

Accepted Answer

Class B fires involve flammable liquids or gases.

Question 3

Changes to the National Electrical Code from the previous edition are indicated by grey highlighting or a __________ beside the table or figure in which the change has occurred.

Accepted Answer

The answer of Changes to the National Electrical Code from...

Question 4

A two-pronged plug that distinguishes between the grounded conductor and the 'hot' conductor by having a grounded conductor prong that is wider than the 'hot' conductor prong is called a(n) ____________________ plug.

Accepted Answer

The answer of A two-pronged plug that distinguishes between the...

Question 5

Scaffold planks must be secured and must extend over the end supports at least __________ inches but not more than __________ inches.

Accepted Answer

The answer of Scaffold planks must be secured and must...

Question 6

A straight or extension ladder should extend at least __________ above the top support when placed against a structure that is not as tall as the ladder.

Accepted Answer

The answer of A straight or extension ladder should extend...

Question 7

Which of the following types of fire extinguishers should be used on electrical fires?

Accepted Answer

The answer of Which of the following types of fire...

Question 8

The three components that must be present for a fire to start and sustain itself are ____________________, ____________________, and ____________________.

Accepted Answer

The answer of The three components that must be present...

Question 9

According to Ohm's law, a 120 volts banch circuit with a total circuit resistance of 15 ohms will have a current flow of ____________________ amps.

Accepted Answer

The answer of According to Ohm's law, a 120 volts...

Question 10

__________________________________________ are designed to inform a worker of a material's physical properties, its effects on health, the proper type and style of protective equipment needed when using the material, and the proper first aid treatment to be given when exposed to the material.

Accepted Answer

The answer of __________________________________________ are designed to inform a worker...

Question 11

All employees who are exposed to hazardous conditions such as falling objects, electrical hazards, or burns are required to wear ___________________________________ on the job site.

Accepted Answer

The answer of All employees who are exposed to hazardous...

Question 12

Which of the following items is not typically included in a Material Safety Data Sheet?

Accepted Answer

The cost of the material is not typically included in a Material Safety Data Sheet.

Question 13

All electrical equipment and conductors are to be considered ____________________ until determined to be otherwise by testing methods.

Accepted Answer

The answer of All electrical equipment and conductors are to...

Question 14

Fires that occur in or near electrical equipment such as motors, switchboards, and electrical wiring are classified as Class __________ fires.

Accepted Answer

Class C fires involve electrical equipment and require non-conductive extinguishing agents to safely put them out.

Question 15

Which of the following items is considered to be Personal Protective Equipment (PPE)?

Accepted Answer

All three items (safety glasses, hard hat, and work boots) are considered to be Personal Protective Equipment (PPE) and are commonly required in various occupations to protect workers from potential hazards.

Question 16

The amount of current that it takes to cause ventricular fibrillation is __________ milliamperes.

Accepted Answer

The answer of The amount of current that it takes...

Question 17

When an arc occurs, explosive expansion causes molten metal to be thrown through the air and onto the skin or into the eyes of an electrical worker. The high pressure that results from a/an ____________________ can rupture eardrums and knock people off ladders and scaffolding.

Accepted Answer

The answer of When an arc occurs, explosive expansion causes...

Question 18

The National Electrical Code is revised every __________ years to reflect the latest changes and trends in the electrical industry.

Accepted Answer

The answer of The National Electrical Code is revised every...

Question 19

The National Electrical Code chapter that covers Methods and Materials is __________.

Accepted Answer

Chapter 3 of the National Electrical Code (NEC) covers Wiring Methods and Materials.

Question 20

A dangerous condition associated with the possible release of energy caused by an electric arc is called a/an __________.

Accepted Answer

An arc-flash is a dangerous condition associated with the release of energy caused by an electric arc. An arc flash can cause serious injury or death and can result from equipment failure, human error, or other factors. Choices A, C, and D are not specific to the release of energy caused by an electric arc.

Quiz 1: Residential Workplace Safety