Advanced Qualification · A-007 Feedlines and matching · A-007-002-010
The reciprocal of the square root of the dielectric constant of the material used to separate the conductors in a transmission line gives the ____________ of the line:
- A VSWR
- B impedance
- C hermetic losses
- D velocity factor
Correct answer: D — velocity factor. From the official ISED question bank, verified word for word.
Why
The velocity factor tells you how fast a radio wave travels down 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 at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.