General exam question G7B09
Subelement G7, PRACTICAL CIRCUITS· Group G7B
What determines the frequency of an LC oscillator?
- A.The number of stages in the counter
- B.The number of stages in the divider
- C.The inductance and capacitance in the tank circuit (correct answer)
- D.The time delay of the lag circuit
WhyThe frequency of an LC oscillator is determined by the inductance and capacitance in the tank circuit. An LC oscillator's operating frequency is set by the resonant tank circuit, the specific values of inductance and capacitance used, since that combination determines the frequency at which the tank naturally resonates, answer C. Counter stages, divider stages, and a lag circuit's time delay are features of other kinds of frequency-generating circuits (digital counters and RC-based oscillators), not what sets an LC tank's resonant frequency.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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