Verified | 2024 Version
What is electrical Shock? - ✔✔A sensation and muscular spasm when electric current passes through the
body.
What is a GFCI? - ✔✔Ground Fault Circuit Interrupter (automatically shut's off electrical flow in the event
of an overload)
TS Transformers - ✔✔Open: T doesn't generate output V
Short: could be partial which would then change number of coils so Ep would change or Es
What is voltage - ✔✔Potential of electric energy; pressure of electrons pushing away from each other.
Current is defined as __________________________. - ✔✔a flow of electric charge
What are some factors affecting shock? - ✔✔Amount of current, path of current, amount of body
resistance, and length of time current flows in body
What is not a primary factor in severity of an electric shock? - ✔✔The general health of the victim.
Ways to prevent shock? - ✔✔Isolate, insulate & ground
What is the minimum AC current required to cause severe muscle contractions? - ✔✔12 mA
How much more DC is required to freeze the body than AC? - ✔✔5 times more
What types of burns are there? - ✔✔Electrical burns, arc burns, and thermal contact burns
, Electrical burns are what? - ✔✔Electrical current flowing through tissue or bones
Arc burns are what? - ✔✔Electrical current flowing through tissue or bones
Thermal contact burns are what? - ✔✔When skin comes in contact with hot surfaces of overheated
electrical conductors
Factors of electrical accidents - ✔✔Unsafe equipment, unsafe environment, and unsafe work practices
What should you do first if someone has been shocked? - ✔✔Remove the victim from the source.
What type of protection is worn when use of a tool produces sparks and debris? - ✔✔Safety goggles.
What category includes electrical fires? - ✔✔Class C.
Switches have __________ resistance when closed, and ____________ resistance when open. -
✔✔minimum, maximum
Type of switches - ✔✔Toggle, slide, rotary, and push button. Single or double pole and throw.
Fuses and circuit breakers are both protection devices, however, while fuses are not ____________,
circuit breakers are. - ✔✔reusable
Are capacitors circuit protection devices? - ✔✔No.
A _______ ________ fuse will typically blow in about one second, while a ________ ________ could
take 1-30 seconds. - ✔✔Fast acting; slow blow
What happens to the current path if the wire in a fuse melts? - ✔✔It stops.