6. The Q of an LC circuit is given by …………
(a) 2πfr x R
(b) 2πfrL / R
(c) R / 2πfrL
(d) R2/2πfrL
7. Frequencies above …………… are called radio frequencies.
(a) 10 kHz
(b) 50 kHz
(c) 100 kHz
(d) 200 kHz
8. The voltage gain of a tuned amplifier is ……………. at resonant frequency.
(a) Zero
(b) Minimum
(c) Maximum
(d) Half-way between maximum and minimum
9. When either L or C is increased, the resonant frequency of LC circuit ……………
(a) Increases
(b) Decreases
(c) Remains the same
(d) Insufficient data
10. The Q of a tuned amplifier is generally …………….
(a) Less than 5
(b) Less than 10
(c) More than 10
(d) None of the above
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