Technician exam question T7C08
Subelement T7, PRACTICAL CIRCUITS· Group T7C
T7C08
Which instrument can be used to determine SWR?
- A.Voltmeter
- B.Ohmmeter
- C.Iambic pentameter
- D.Directional wattmeter (correct answer)
WhyA directional wattmeter can be used to determine SWR. A directional wattmeter measures both forward and reflected power in a feed line, and comparing the two lets it calculate and display SWR, answer D. A voltmeter (A) and ohmmeter (B) measure unrelated quantities, and "iambic pentameter" (C) is a poetic meter, not a measuring instrument at all.
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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