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3-56. Which of the following is/are an
advantage of ssb transmission?
1. The voice quality of ssb transmissions
is superior to both AM and fm
transmissions
2. Ssb transmissions are not susceptible
to interference caused by sun spots
and atmospherics
3. Ssb requires one-sixth of the output
power and less than half the
bandwidth required by AM to
transmit the same amount of
intelligence power
4. All of the above
3-57. In fm, the AMOUNT of frequency
deviation (shift) is proportional to
1. the frequency of the carrier
2. the amplitude of the modulating
signal
3. the frequency of the modulating
signal
4. the plate current of the transmitter’s
linear amplifier
3-58. In fm, the RATE of frequency deviation
(shift) is proportional to
1. the impedance of the antenna
2. the power output of the transmitter
3. the amplitude of the modulating
signal
4. the frequency of the modulating
signal
3-59. When analyzing the composition of a
rectangular wave with a spectrum
analyzer, which of the following types of
displays will you see?
1. A fundamental frequency and its odd
harmonics only
2. A fundamental frequency and its even
harmonics only
3. A fundamental frequency and its
combined even and odd harmonics
4. An infinite number of fundamental
frequencies
3-60. The ability of a spectrum analyzer to
resolve signals refers to its ability to
1. distinguish one signal from other
signals
2. shape signals through the use of
filters
3. determine a receiver’s minimum
discernible signal
4. measure the frequency of a signal
3-61. The ability of a spectrum analyzer to
resolve signals is limited by which of the
following factors?
1. The amplitude of the signal under test
2. The narrowest bandwith of the
spectrum analyzer
3. The upper frequency limits of the
spectrum analyzer
4. The lower frequency limits of the
spectrum analyzer
3-62. Which of the following characteristics of
a transmission line fault can be observed
using time-domain reflectometry?
1. Nature of the fault
2. Distance to the fault
3. Both 1 and 2 above
4. Figure of merit of the fault
3-63. What is the primary application of swept-
frequency testing?
1. To determine the broadband
frequency response of a device
2. To determine the characteristics of a
device at a specific frequency
3. To determine the impedance of a
transmission line
4. To determine the swr of a
transmission line
