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ATT Comp Test (FC)/Questions with solutions
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ATT Comp Test (FC)/Questionswith solutions
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.
- What do the following letters mean in a basic schematic diagram? C, D, Q,
S, T, TP, AVC - -C - Capacitor, D - Diode, Q - Transmitter, S - Switch, T-
Transformer, TP - Test Point, AVC - Automatic Volume Control
- voltage drop - -The difference in voltage across an electrical device that
has current flowing through it.
- Applied voltage - -Sum of all voltage drops in the circuit.
- Faults in series are: - -Open, Short, Changed value
- What are the four basic TS steps? - -A)Analyze circuit
B)Check Setup
C)Calculate/measure values
D)Check Results
- What fault provides no resistance to current flow? - -A short.
- What fault causes resistance to increase or decrease? - -A changed value.
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