Basic Qualification · B-006 Feedlines and antenna systems · B-006-002-009
A balanced transmission line:
- A carries RF current on one wire only
- B is made of one conductor only
- C is made of two parallel wires
- D has 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
Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.