Advanced Qualification · A-007 Feedlines and matching · A-007-002-006
What is the term for the ratio of the actual velocity at which a signal travels through a transmission line to the speed of light in a vacuum?
- ASurge impedance
- BStanding wave ratio
- CVelocity factor
- DCharacteristic impedance
Correct answer: C — Velocity factor. From the official ISED question bank, verified word for word.
Why
Velocity factor is the correct term because it describes how much slower a radio signal moves inside a cable compared to its speed in empty space. 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