General exam question G4B01
Subelement G4, AMATEUR RADIO PRACTICES· Group G4B
What item of test equipment contains horizontal and vertical channel amplifiers?
- A.An ohmmeter
- B.A signal generator
- C.An ammeter
- D.An oscilloscope (correct answer)
WhyAn oscilloscope is the item of test equipment that contains horizontal and vertical channel amplifiers. An oscilloscope displays a voltage waveform by driving the trace horizontally (usually as a time base) and vertically (proportional to the input signal), and both of those deflection systems are built from dedicated horizontal and vertical channel amplifiers, answer D. An ohmmeter, signal generator, and ammeter are built around entirely different circuitry and don't contain this pair of deflection amplifiers.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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