106. A tuned amplifier is used in __ application.
A. radio frequency
B. low frequency
C. audio frequency
D. none of the above

---

107.  Frequencies above ___ kHz are called radio frequencies.
A.2
B.10
C.50
D.200

---

108. At series or parallel resonance, the circuit power factor is
A.0
B.0.5
C.1
D.0.8

---

109. The voltage gain of a tuned amplifier is at resonant frequency.
A. minimum
B. maximum
C. half-way between maximum and minimum
D. zero

---

110. At parallel resonance, the line current is
A. minimum
B. maximum
C. quite large
D. none of the above

---

111. At series resonance, the circuit offers ____ impedance.
A. zero
B. maximum
C.minimum
D. none of the above

---

112. A resonant circuit contains ____ elements.
A. R and L only
B. R and C only
C. only R
D. L and C

---