Extra exam question E9H10
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9H
How can the output voltage of a multiple-turn receiving loop antenna be increased?
- A.By reducing the permeability of the loop shield
- B.By utilizing high impedance wire for the coupling loop
- C.By increasing the number of turns and/or the area enclosed by the loop (correct answer)
- D.All these choices are correct
WhyA multiple-turn receiving loop antenna's output voltage can be increased by increasing the number of turns and/or the area enclosed by the loop. A multiple-turn receiving loop antenna's output voltage can be increased by adding more turns and/or increasing the physical area the loop encloses, since both changes directly increase how much of the passing magnetic field the loop actually links and converts into voltage, answer C. Reducing shield permeability and using high-impedance coupling loop wire aren't what increases a receiving loop's output voltage, so "all these choices" overstates it.
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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