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CHST Construction Safety Exam 2 Questions With Complete Solutions $10.99   Add to cart

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CHST Construction Safety Exam 2 Questions With Complete Solutions

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CHST Construction Safety Exam 2 Questions With Complete Solutions

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  • August 6, 2024
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CHST Construction Safety Exam 2 Questions
With Complete Solutions
insulate Correct Answers protection around a wire
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isolate Correct Answers to keep out of reach
hh hh




NEC Correct Answers National Electric Company
hh hh




voltage Correct Answers pressure
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amperage Correct Answers flow of electricity
hh hh




current Correct Answers electrical movement (measured in
hh hh



amps)

circuit Correct Answers complete path of the current
hh hh




resistance Correct Answers restriction to electrical flow
hh hh




conductors Correct Answers substances, like metals, with little
hh hh



resistance to electricity that allow electricity to flow

grounding Correct Answers a conductive connection to the
hh hh



earth which acts as a protective measure; creates a low-
resistance path from a tool to the earth to disperse unwanted
current

,insulators Correct Answers substances with high resistance to
hh hh



electricity like glass, porcelain, plastic, and dry wood that
prevent electricity from getting to unwanted areas

electrical burns Correct Answers burn from the inside out
hh hh




thermal burns Correct Answers burn from the outside
hh hh




If a power line falls on your car, will you get shocked? Correct hh



Answers No; unless you step out of the vehicle. At the moment,
hh



the you are at the same potential as the charged power line that
has struck your vehicle. Stepping out will cause you to get
electrocuted.

Severity of shock depends on Correct Answers path of current
hh hh



through the body

Severity of shock depends on Correct Answers amount of
hh hh



current flowing through the body (amps)

Severity of shock depends on Correct Answers duration of the
hh hh



shocking current through the body

Low voltage does not mean low hazard Correct Answers hh



Amperage is what kills
hh




Currents above 10 mA Correct Answers can cause paralysis or
hh hh



"freeze" muscles

, Currents above 75 mA Correct Answers can cause a rapid,
hh hh



ineffective heartbeat; death will occur in a few minutes unless a
defibrillator is used

mA Correct Answers milliampere= 1/1,000 of an ampere
hh hh




Burns Correct Answers most common shock-related injury;
hh hh



typically occurs on hands

Control exposed electrical parts Correct Answers isolate
hh hh



electrical parts; use barriers, replace covers, use cabinets or
boxes

Control exposed electrical parts Correct Answers close
hh hh



openings; junction boxes, pull boxes and fittings must have
approved covers; unused openings in cabinets, boxes and fittings
must be closed (no missing knockouts)

Control overhead power lines Correct Answers Stay at least 10
hh hh



feet away

Control overhead power lines Correct Answers Post warning
hh hh



signs

Control overhead power lines Correct Answers Assume that
hh hh



lines are energized

Control overhead power lines Correct Answers Use wood (dry)
hh hh



or fiberglass ladders, not metal

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