73·STUDY

Extra exam question E9G10

Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9G

E9G10

What do the arcs on a Smith chart represent?

  • A.Frequency
  • B.SWR
  • C.Points with constant resistance
  • D.Points with constant reactance (correct answer)

WhyThe arcs on a Smith chart represent points with constant reactance. The arcs on a Smith chart represent points of constant reactance, tracing every impedance value that shares the same reactance regardless of its resistance, the complementary curve family to the resistance circles, answer D. They don't represent frequency, SWR, or constant resistance, those are either represented by the circles instead or aren't a Smith chart's basic built-in curve families 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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