Extra exam question E9G11
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9G
In what units are the wavelength scales on a Smith chart calibrated?
- A.In fractions of transmission line electrical frequency
- B.In fractions of transmission line electrical wavelength (correct answer)
- C.In fractions of antenna electrical wavelength
- D.In fractions of antenna electrical frequency
WhyThe wavelength scales on a Smith chart are calibrated in fractions of the transmission line's electrical wavelength. The wavelength scales printed around the edge of a Smith chart are calibrated in fractions of the transmission line's electrical wavelength, letting a user directly read off how far along the line (in wavelengths) a given point of interest sits, answer B. They aren't calibrated in fractions of electrical frequency, and they describe the transmission line's own electrical wavelength, not an antenna's, so options referencing antenna wavelength or frequency don't match what this scale actually shows.
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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