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3-57. Of the following terms, which one is used
for the nonresonant transmission line?
1. A tuned line
2. A shorted line
3. An untuned line
4. A terminated line
3-58. A transmission line that is resonant is
sometimes referred to as which of the
following types of lines?
1. Tuned
2. Matched
3. Untuned
4. Unmatched
3-59. A short-circuited section of transmission
line that is an odd number of quarter-
wavelengths long shows the same
characteristics as which of the following
devices?
1. A series-resonant circuit
2. A parallel-resonant circuit
3. An inductive reactance equal to Z0
4. A capacitive reactance equal to Z0
3-60. Which of the following circuits appears as
a very high resistance at resonance?
1. Nonresonant
2. Series-resonant
3. Parallel-resonant
4. Each of the above
3-61. When a series-resonant circuit is resonant
at a frequency above the generator
frequency, it acts as what type of circuit?
1. Open
2. Resistive
3. Inductive
4. Capacitive
3-62. Which of the following sections of
transmission line can be used as a parallel-
resonant circuit?
1. A shorted 1/4-wavelength section
2. An open 1/4-wavelength section
3. A shorted 1/2-wavelength section
4. An open 3/4-wavelength section
3-63. A generator connected to an open-ended
line greater than 1/4 wave-length but less
than 1/2 wave-length senses which of the
following circuit component
characteristics?
1. Zero reactance
2. Low resistance
3. Inductive reactance
4. Capacitive reactance
3-64. Which of the following conditions of
current (I) and impedance (Z) exist at even
quarter-wave points on a shorted
transmission line?
1. Low I, low Z
2. Low I, high Z
3. High I, high Z
4. High I, low Z
3-65. What is the maximum distance, in
wavelengths (
l
), between adjacent zero-
current points on an open-circuited line?
1. 1
l
2.
1/2
l
3.
1/4
l
4.
1/8
l
3-66. When a line is terminated in a capacitance,
the capacitor performs which, if any, of
the following circuit actions?
1. It absorbs all the energy
2. It reflects all the energy
3. It reacts as if it were a short
4. None
