Technician exam question T6D01
Subelement T6, ELECTRONIC AND ELECTRICAL COMPONENTS· Group T6D
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
- A.Transformer
- B.Rectifier (correct answer)
- C.Amplifier
- D.Reflector
WhyA rectifier changes an alternating current into a varying direct current signal. A rectifier is the circuit or device that converts alternating current into a pulsating, one-direction, varying DC signal, typically using one or more diodes, answer B. A transformer (A) changes AC voltage without converting it to DC, an amplifier (C) increases signal amplitude without changing AC to DC, and "reflector" (D) is an antenna element, unrelated to rectification.
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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