Basic Qualification · B-005 Basic electronics and theory · B-005-008-003
What change in transmitter power results in a 6 dB increase?
- A Multiply the original power by 3
- B Multiply the original power by 2
- C Multiply the original power by 1.5
- D Multiply the original power by 4
Correct answer: D — Multiply the original power by 4. From the official ISED question bank, verified word for word.
Why
A 6 dB increase means the signal strength has grown significantly, specifically requiring you to multiply the original power by 4. 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.