Technology: Engineering & Design

Chapter 6: Electronic Communication

Self-Check Quizzes

1.
In AM radio signals, modulation affects the
A)tempo.
B)frequency.
C)amplitude.
D)wavelength.
2.
Which communication channel is able to operate without any physical link between sender and receiver?
A)optical fiber cable
B)coaxial cable
C)twisted wire pair
D)signal carried on microwaves
3.
Color electronic displays reproduce the full color palette using merely three colors of light: blue, green, and
A)purple.
B)red.
C)brown.
D)white.
4.
In the movement of a particular wave, 54 crests pass a fixed point in one minute. Using this information, you could calculate the
A)amplitude.
B)frequency.
C)electromagnetic coefficient.
D)wavelength.
5.
An emerging electronic communication technology that allows people and goods to be monitored and tracked also raises new concerns about protecting people's privacy. This technology is
A)RFID.
B)HDTV.
C)television receiver cell phones.
D)microwave signal carriers.
6.
Downlinks and uplinks are signal transmissions between
A)switching stations and cell phones.
B)analog and digital communication channels.
C)earth stations and satellites.
D)mainframe computers and PCs or minicomputers.
7.
A camera or camcorder that doesn't use conventional film is most likely equipped with
A)fuel cells.
B)a charge-coupled device.
C)transponders.
D)flat-panel plasma units.
8.
Which statement is true about phones that are being manufactured and marketed today?
A)The transmitter (mouthpiece) contains current-generating carbon granules.
B)Features and services are being generally curtailed.
C)The receiver contains a magnetizing iron coil.
D)The device is miniaturized and made more versatile though the use of integrated circuits.
9.
In cellular technology, a specific area served by a cellular tower connected to a switching office is termed a(n)
A)digital region.
B)RFID.
C)cell.
D)tag.
10.
The communication path between a sender and a receiver of messages is called a
A)cable.
B)port.
C)transponder link.
D)transmission channel.
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