Exam (elaborations)
CHST Construction Safety Exam 2 Questions With Complete Solutions
- Course
- Institution
CHST Construction Safety Exam 2 Questions With Complete Solutions
[Show more]
Content preview
CHST Construction Safety Exam 2 QuestionsWith Complete Solutions
insulate Correct Answers protection around a wire
hh hh
isolate Correct Answers to keep out of reach
hh hh
NEC Correct Answers National Electric Company
hh hh
voltage Correct Answers pressure
hh hh
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Classroom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now