General exam question G7C08
Subelement G7, PRACTICAL CIRCUITS· Group G7C
Which parameter affects receiver sensitivity?
- A.Input amplifier gain
- B.Demodulator stage bandwidth
- C.Input amplifier noise figure
- D.All these choices are correct (correct answer)
WhyReceiver sensitivity is affected by input amplifier gain, input amplifier noise figure, and demodulator stage bandwidth. Receiver sensitivity, how weak a signal the receiver can still usefully detect, depends on the front-end amplifier's gain, the front-end amplifier's noise figure, and the demodulator stage's bandwidth all together, since each one affects how much a weak signal stands out above the receiver's own noise, answer D. Because A, B, and C are each individually a real contributor to overall sensitivity, the complete answer has to include all three.
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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