Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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T7A01 Which term describes the ability of a
receiver to detect the presence of a signal?
a. | Linearity | c. | Selectivity | b. | Sensitivity | d. | Total Harmonic
Distortion |
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2.
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T7A02 What is a transceiver?
a. | A type of antenna switch | c. | A component in a repeater that filters out unwanted
interference | b. | A unit combining
the functions of a transmitter and a receiver | d. | A type of antenna
matching network |
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3.
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T7A03 Which of the following is used to
convert a radio signal from one frequency to another?
a. | Phase splitter | c. | Inverter | b. | Mixer | d. | Amplifier |
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4.
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T7A04 Which term describes the ability of a
receiver to discriminate between multiple signals?
a. | Discrimination ratio | c. | Selectivity | b. | Sensitivity | d. | Harmonic
distortion |
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5.
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T7A05 What is the name of a circuit that
generates a signal at a specific frequency?
a. | Reactance modulator | c. | Low-pass niter | b. | Product
detector | d. | Oscillator |
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6.
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T7A06 What device converts the RF input and
output of a transceiver to another band?
a. | High-pass niter | c. | Transverter | b. | Low-pass
niter | d. | Phase converter |
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7.
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T7A07 What is meant by
"PTT"?
a. | Pre-transmission tuning to reduce transmitter harmonic
emission | c. | A primary transformer tuner use to match
antennas | b. | Precise tone transmissions used to limit repeater access
to only certain signals | d. | The push-to-talk function that switches between receive
and transmit |
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8.
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T7A08 Which of the following describes combining
speech with an RF carrier signal?
a. | Impedance matching | c. | Modulation | b. | Oscillation | d. | Low-pass
filtering |
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9.
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T7A09 What is the function of the SSB/CW-FM
switch on a VHF power amplifier?
a. | Change the mode of the transmitted
signal | c. | Change the frequency range of the amplifier to operate
in the proper portion of the band | b. | Set the amplifier
for proper operation in the selected mode | d. | Reduce the
received signal noise |
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10.
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T7A10 What device increases the low-power output
from a handheld transceiver?
a. | A voltage divider | c. | An
impedance network | b. | An RF power
amplifier | d. | All of these choices are correct |
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11.
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T7A11 Where is an RF preamplifier
installed?
a. | Between the antenna and receiver | c. | Between a transmitter and antenna tuner | b. | At the output of the transmitter's power
amplifier | d. | At the receiver's audio output |
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