DC Final Flashcards
To break a stuck nut loose you should use a ______ wrench
Box
Rubber grips on hand tools are for
Increased grip and comfort of the tool
In order to protect fasteners from corrosion they should be coated in?
Zinc
A balanced signal is transmitted on what kind of cable?
Twisted pair
Unbalanced signal is transmitted in what type of cable
Coaxial
Twisted pair cable has a max run distance of
90 m
Max pull force for a UTP
25 lbs
To improve conductor durability and flexibility use a _________ conductor
Stranded
Non metallic flexible raceway must be _______ and ________ for specific use and purpose
Listed and classified
In a series circuit _______ is the same at every point in the circuit
Current
What is the unit of measure for power
Watt
When 2 resistors are connected in series overall resistance is said to
Increase
When two resistors are connected in parallel the overall resistance is said to
Decrease
A joule is _______ than a kWh
Smaller
In a circuit with fixed resistance if you double voltage what will happen to amperage
It will double
What is the correct height to distance from wall ratio for using an extension ladder
4-1
Time required to complete one cycle of AC current is called the
Period
What are 3 states of energy
Potential
Kinetic
Rest
The 3 types of communication cable are
Coax
Twisted pair
Fiber
90 degree bends per 100 ft segment of conduit
2
What is a potentiometer
3 tiered variable voltage resistor
What is the wattage rating of a resistor mean
Max wattage it can sustained for an extended period of time
The sum of power consumed at each component in a series circuit is equal to
Total power
Kirchhoffs current law
Current into a source equals current out
