Comprehensive Questions
(Frequently Most Tested) with
Verified Answers
What is electrical Shock? - Answer: A sensation and muscular spasm when electric current passes
through the body.
What is a GFCI? - Answer: Ground Fault Circuit Interrupter (automatically shut's off electrical flow in the
event of an overload)
TS Transformers - Answer: 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 - Answer: Potential of electric energy; pressure of electrons pushing away from each
other.
Current is defined as __________________________. - Answer: a flow of electric charge
What are some factors affecting shock? - Answer: 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? - Answer: The general health of the victim.
Ways to prevent shock? - Answer: Isolate, insulate & ground
What is the minimum AC current required to cause severe muscle contractions? - Answer: 12 mA
How much more DC is required to freeze the body than AC? - Answer: 5 times more
, What types of burns are there? - Answer: Electrical burns, arc burns, and thermal contact burns
Electrical burns are what? - Answer: Electrical current flowing through tissue or bones
Arc burns are what? - Answer: Electrical current flowing through tissue or bones
Thermal contact burns are what? - Answer: When skin comes in contact with hot surfaces of overheated
electrical conductors
Factors of electrical accidents - Answer: Unsafe equipment, unsafe environment, and unsafe work
practices
What should you do first if someone has been shocked? - Answer: Remove the victim from the source.
What type of protection is worn when use of a tool produces sparks and debris? - Answer: Safety
goggles.
What category includes electrical fires? - Answer: Class C.
Switches have __________ resistance when closed, and ____________ resistance when open. - Answer:
minimum, maximum
Type of switches - Answer: 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. - Answer: reusable
Are capacitors circuit protection devices? - Answer: No.