02/10/22 OSHA grant: Post-training quiz

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Training topic: Introduction into Electric Arc Hazards

This material was produced under Susan Harwood Grant SH-99065-SH0 from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.
Revisions were made to this material under grant number SH-37168-SH1 from the Occupational Safety and Health Administration, U.S. Department of Labor.

Trainee’s name *

Trainee’s company name *

What force determines electric arc behavior and shape? *

gravitational force

mechanical force

electrostatic force

electromagnetic force

What is the predominant hazard from electric arc energy dissipation? *

sound energy

thermal energy

pressure energy

light energy

Can the direction of energy dissipation from electric arc be predicted? *

No, as no energy is dissipated from electric arc

No, as arc energy is dissipated randomly in any direction

Yes, by knowing what type of arc possibly occurs

Yes, as arc energy is always dissipated in all directions equally

Wearing flame resistant (FR) undergarment is mostly useful for protecting workers when exposed to: *

Electric arc occurring in the metalclad enclosed switchgear

Electric arc occurring on high voltage overhead line

Direct contact with energized parts at medium voltage when current flows in wet clothing instead of through the internal tissues

FR undergarments are not necessary and not useful in electric arc protection

Why is the proper body positioning during energized work important to prevent injuries from an electric arc? *

a) So that the worker can stay out of the energy dissipation path

b) To avoid contact with 5,000 ℃ arc plasma channel

c) So that you can see the arc and decide where to escape

Both a&b are correct

Both b&c are correct

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