Basic Qualification · B-006 Feedlines and antenna systems · B-006-002-009
A balanced transmission line:
- Acarries RF current on one wire only
- Bis made of one conductor only
- Cis made of two parallel wires
- Dhas one conductor inside the other
Correct answer: C — is made of two parallel wires. From the official ISED question bank, verified word for word.
Why
A balanced transmission line uses two parallel wires that carry equal but opposite radio frequency currents, keeping the electrical balance between them. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and antenna systems is section B-006 of the Basic exam: Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.
Drill B-006 — free, no account