Basic Qualification · B-005 Basic electronics and theory · B-005-008-010
The power of your transmitter is 100 watts and your transmission line introduces a loss of 6 dB. How much power is delivered to the antenna?
- A 50 watts
- B 17 watts
- C 33 watts
- D 25 watts
Correct answer: D — 25 watts. From the official ISED question bank, verified word for word.
Why
A loss of 6 dB means the signal power is cut in half twice. The full explanation — and one for every question — is in Pro.
Practise this section
The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.