Basic Qualification · B-004 Circuit components · B-004-001-009
A device labelled "Gain = 10 dB" is likely to be an:
- A amplifier
- B attenuator
- C oscillator
- D audio fader
Correct answer: A — amplifier. From the official ISED question bank, verified word for word.
Why
A device with a gain of 10 dB increases the strength of a signal, which is exactly what an amplifier does. The full explanation — and one for every question — is in Pro.
Practise this section
The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.