Technician exam question T7A01
Subelement T7, PRACTICAL CIRCUITS· Group T7A
Which term describes the ability of a receiver to detect the presence of a signal?
- A.RF gain
- B.Sensitivity (correct answer)
- C.Selectivity
- D.Total Harmonic Distortion
WhySensitivity describes a receiver's ability to detect the presence of a signal. Sensitivity describes how well a receiver can pick a weak signal out of its own internal noise, in other words, how faint a signal it can still detect, answer B. RF gain (A) is a control that adjusts amplification, not a measure of detection ability, selectivity (C) describes separating nearby signals rather than detecting weak ones, and Total Harmonic Distortion (D) is an audio-quality measurement, unrelated to detection.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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