Extra exam question E6E05
Subelement E6, CIRCUIT COMPONENTS· Group E6E
E6E05
Which of the following noise figure values is typical of a low-noise UHF preamplifier?
- A.0.5 dB (correct answer)
- B.-10 dB
- C.44 dBm
- D.-20 dBm
Why0.5 dB is a typical noise figure value for a low-noise UHF preamplifier. A low-noise UHF preamplifier typically has a noise figure in the fraction-of-a-dB range, with 0.5 dB being a realistic figure for a genuinely low-noise design, answer A. -10 dB isn't a physically meaningful noise figure (noise figure can't be negative for a real device), and 44 dBm and -20 dBm are power level units, not noise figure units at all.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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