Extra exam question E3B13
Subelement E3, RADIO WAVE PROPAGATION· Group E3B
What type of polarization is supported by ground-wave propagation?
- A.Vertical (correct answer)
- B.Horizontal
- C.Circular
- D.Elliptical
WhyGround-wave propagation supports vertically polarized signals. Ground-wave propagation supports vertically polarized signals well, since a vertically polarized wave's electric field, oriented perpendicular to the conductive ground, induces currents in the earth that help sustain the wave as it follows the surface, answer A. Horizontally, circularly, and elliptically polarized signals don't couple to the ground the same way and don't propagate efficiently as a ground wave.
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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