Extra exam question E9G07
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9G
On the Smith chart shown in Figure E9-3, what is the only straight line shown?
- A.The reactance axis
- B.The current axis
- C.The voltage axis
- D.The resistance axis (correct answer)
WhyOn the Smith chart in Figure E9-3, the only straight line shown is the resistance axis. In Figure E9-3, the only straight line shown is the horizontal resistance axis running through the chart's center, representing every purely resistive impedance value from zero at the left to infinity at the right, while every other curve on the chart is a circular arc, answer D. It isn't the reactance axis (that's the curved outer boundary circle), and "current axis" and "voltage axis" aren't features a standard Smith chart actually has.
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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- E9G01Which of the following can be calculated using a Smith chart?
- E9G02What type of coordinate system is used in a Smith chart?
- E9G03Which of the following is often determined using a Smith chart?
- E9G04What are the two families of circles and arcs that make up a Smith chart?
- E9G05Which of the following is a common use for a Smith chart?