Occupation& Environ Safety Mgt CH 16 & 18

Approximately how many injuries occur each year as a result of improper use of extension cords? 2,500 1,000,000 346,500 18,000

2,500

Which of the following state is NOT true? Neutral and ground wire are same GFCI and GFI are same NEC published by NFPA Arc flash is a kind of electrical short circuit

Neutral and ground wire are same

Which one of the following factors is NOT a function of thermal comfort in the workplace? Radiant heat Air distribution Temperature Humidity

Radiant heat

Interconnected power strips are known as what? Daisy chains Power chains Wiring chains None of the items listed here

Daisy chains

Atoms have a centrally located nucleus consisting primarily of electrons.

False

Current flow is measured in ohms.

False

Radiant heat is heat that moves through space as a result of moving matter in space.

False

Third-degree burns are easily recognizable from the blisters that form on the skin.

False

Which of the following is NOT used for reducing static buildup? Fuses Ionizers Radioactive neutralizers Antistatic materials

Fuses

Which of the following is NOT a function of the human skin? Hypothermia Protection Excretion Sensation

Hypothermia

Which of the following is NOT a symptom of heat exhaustion? Inability to sleep Nausea and vomiting Fatigue Rapid pulse

Inability to sleep

Which of the following statements about an electric spark is most accurate? Involves little power and is discharged into a small space Is a result of a bad grounding wire Is created by static electricity only Can cause electrocution

Involves little power and is discharged into a small space

Which of the following is NOT generally thought of as a concept related to heat stress? Threshold limit values Work tolerance time Moisture vapor transfer rate Heat cramps

Threshold limit values

A short circuit is one in which the load has been removed or is bypassed.

True

Conduction is the transfer of heat between two bodies that are touching or from one location to another within a body.

True

Electricity is the flow of negatively charged particles through an electrically conductive material.

True

Heat stress is the net heat load to which a worker may be exposed from the combined factors of clothing, environment, and the metabolic effect of work.

True

Metabolic heat is produced within a body as the result of activity that burns energy such as when you run.

True

Power is measured in watts.

True

The lowest CLO value is what? Zero Five Minus 10 None listed here

Zero