Advanced Qualification · A-007 Feedlines and matching · A-007-004-009
Dans un dipôle demi-onde, où trouve-t-on la tension minimale?
- AAu centre
- BÀ l'extrémité droite
- CElle est égale partout
- DAux deux extrémités
Correct answer: A — Au centre. Question tirée de la banque officielle d'ISDE.
Why
In a half-wave dipole, the voltage is lowest right at the centre because that is where the antenna connects to the feedline and current flows most freely. 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.
Drill A-007 — free, no account