Technician exam question T7C03
Subelement T7, PRACTICAL CIRCUITS· Group T7C
What does a typical RF dummy load consist of?
- A.A low-voltage power supply and an AC relay
- B.A 50-ohm non-inductive resistor mounted on a heat sink (correct answer)
- C.A low-voltage power supply and a DC relay
- D.A 50-ohm inductive reactance mounted in a shielded enclosure
WhyA typical RF dummy load consists of a 50-ohm non-inductive resistor mounted on a heat sink. A typical RF dummy load is simply a 50-ohm non-inductive resistor, built without the coil-like structure that would add unwanted reactance, mounted on a heat sink to safely dissipate the absorbed power as heat, answer B. A and C both describe power supply and relay hardware, unrelated to a dummy load, and D wrongly describes the resistor as inductive, exactly the property a good dummy load is built to avoid.
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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