Advanced Qualification · A-007 Feedlines and matching · A-007-009-002
Which of the following is not correct? Waveguide is an efficient transmission medium because it features:
- Alow copper loss
- Blow hysteresis loss
- Clow radiation loss
- Dlow dielectric loss
Correct answer: B — low hysteresis loss. From the official ISED question bank, verified word for word.
Why
Hysteresis loss happens inside magnetic materials when they are repeatedly magnetized and demagnetized, but a waveguide is simply a hollow metal tube with no magnetic core to cause this effect. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and matching is section A-007 of the Advanced exam: Feedlines and matching at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.
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