GMDSS: Element 3

1. A The ratio of the characteristic impedance of the line to the terminating impedance.
2. B The velocity of the wave on the transmission line divided by the velocity of light in a vacuum.
3. C The velocity of the wave on the transmission line multiplied by the velocity of light in a vacuum.
4. D The index of shielding for coaxial cable.

Tip: press A-D to answer