Basic Qualification · B-003 Station assembly, practice and safety · B-003-008-004
Dans une alimentation stabilisée linéaire, quelle est la fonction du filtre?
- AConvertir le courant alternatif en courant continu
- BMaintenir une tension constante quand la demande augmente
- CAbsorber la puissance produite par l'alimentation
- DLisser le courant continu pulsatif
Correct answer: D — Lisser le courant continu pulsatif. Question tirée de la banque officielle d'ISDE.
Why
A linear power supply first turns alternating current into direct current, but this new current still pulses on and off like a heartbeat. The full explanation — and one for every question — is in Pro.
Practise this section
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account