Electronics Information Flashcards
When using a digital multi meter to measure the amps in a circuit, the leads should be connected…
In the series between the power source and load.
What is the correct abbreviation for kilowatt-hour?
kWh
What position is a push-to-break switch usually in?
On
Which can measure electrical potential between two points in a circuit?
Voltmeter.
How many amps are in 3,500 milliamps?
3.5
What is calculated with equation P = I * V?
Electrical power.
What does the I stand for in the equation P = I * V?
Current
Some of the advantages of a optical data transfer (via optical cable) versus wireline data transfer are:
1) increase resistance to tapering/unauthorized signal interception.
2) reduce the possibility of unwanted interference from electromagnet sources.
What does a capacitor do?
Stores electric current.
Which is an example of a load in a circuit?
Lightbulb.
A real-world usage of multiplexing could be:
1) A telecommunications company using several different laser light colors in the same fiber line to increase overall throughout.
2) A mobile phone service provider setting up a tower to “listen” to multiple cell phone calls at one time.
3) A media company using two microphones to provide the same audio signal to 17 independent audio recorders during a press conference.
Which is a variable resistor with three terminals and a contact that can slide?
Potentiometer.
When wiring 11oV/12oV AC power (in the United States of America), what is the standard accepted color of the neutral wire?
White.
Am ohmmeter is used to measure what?
Electrical resistance.
DTMF stands for ____ and is most often found ____.
Dual Tone Multi-Frequency, in the touch tones in a push button landline telephone.
