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telecomm
electrical properties
53
Other
Not Applicable
03/23/2011

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Term
opposition to the flow of AC
Definition
Reactance
Term
A fundamental frequency sine wave and sine waves at odd harmonic frequencies
Definition
Square wave
Term
A bode plot comapres
Definition
Frequency v's Amplitude
Term
When Xl=Xc
Definition
Resonance occurs
Term
At the resonant frequency a capacitor and inductor in series will exhibit
Definition
Low Impedance
Term
The total opposition to the flow of AC
Definition
Impedance
Term
The Q of a circuit affects
Definition
Bandwidth
Term
Charecteristic impedance is an important spec to consider when choosing a
Definition
Transmisssion line
Term
A pair of copper wires used for data transmission is actually a
Definition
Low pass filter
Term
Maximum power can be transferred to a load only if
Definition
The load impedance is the same value as the generator impedance
Term
The flow of electrons from one atom to another is called
Definition
Current
Term
unit of measure to express the difference of charges between 2 points is measured in what unit
Definition
Volt
Term
the minimum amount of current that could potentially kill someone
Definition
15mA
Term
what is ohms law
Definition
E=IR
Term
The milliamper has a value that is
Definition
one thousandth of an ampere
Term
when resistance decreases and/or voltage increases
Definition
current increases
Term
power is equal to
Definition
I*E
Term
50 mA is equal to
Definition
50 X 10^-3
Term
15 M ohm is equal to
Definition
15000000 ohms (15 * 10^6)
Term
voltage drops in a series circuit is
Definition
The sum of voltage drops equals the applied voltage
Term
current increases and resistance stays the same in a series circuit what happened?
Definition
Voltage increased.
Term
with 2 equal resistors in series what will the drop across each be if the supply is 90 volts
Definition
45
Term
An Ammeter should be connected in
Definition
Series with the part of circuit to be tested
Term
an ideal voltmeeter would have a very
Definition
High resistance
Term
when answering value questions what should be entered with the numbers
Definition
The unit of measurement
Term
a voltmeter indicates a 12 v battery has 12 volts, no load is this reliable
Definition
No the battery may not provide adequate current because of resistance in the battery
Term
a pair of wires displays what 3 charecteristics
Definition
resistance,capacitance and inductance
Term
when a value of 10 volts is given what should it measure approximately
Definition
10 v rms
Term
a capacitor tends to keep this across its terminals
Definition
Voltage
Term
an inductor tends to
Definition
Keep current constant
Term
Maximum power can be dissipated in a load resistance (ie receiver) when the generator(transmitter)
Definition
resistances are equal
Term
reactance changes when
Definition
Frequency changes
Term
capacitance exists when
Definition
2 condutors are separated by an insulator
Term
the dialectric of a capacitor can be ruptured by
Definition
High voltages
Term
when the distance inbetween the plates increases the capacitance
Definition
Decreases
Term
capacitors tend to _____ ac and _____ dc
Definition
Pass ac block dc
Term
resistance is the oppositon to the flow of
Definition
AC and DC
Term
if cat 5 is longer Capacitance and inductance
Definition
Increases
Term
Magnetic flux is equivelent to
Definition
electric current
Term
Permiability in a magnetic is equivelent to
Definition
Conductance in electrical circuit.
Term
a shield should have
Definition
hi permiability
Term
a magnetic field is caused by
Definition
Electrical current
Term
induction occurs when
Definition
magnetic flux lines cut across an inductor
Term
inductance occurs where
Definition
anywhere electrical circuits where current signals vary in amplitude
Term
the y axis on an oscilloscope represents
Definition
Voltage in volts
Term
the x axis on an oscilloscope is a representage of
Definition
time
Term
causes the wave form to be stabilized
Definition
trig
Term
a cable acts like a
Definition
low pass filter
Term
characteristic impedance of cat 3 and cat 5
Definition
100 =/- 15 ohms
Term
maximum power can be transfered to a load if
Definition
the load impedance is the same as the generator impedance.
Term
a bode plot comapres
Definition
frequecy vs amplitude
Term
the total opposition to flow is called
Definition
impedance
Term
what is the formula for measuring frequency usin ms/division.
Definition
1/t*10^-3 or 1*10^3/divisions
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