Advanced Qualification · A-002 Advanced components and circuits · A-002-009-009
In a circuit where the components are tuned to resonate at a higher frequency than applied, the circuit is most likely a:
- Aa VHF/UHF amplifier
- Ba linear amplifier
- Ca frequency divider
- Da frequency multiplier
Correct answer: D — a frequency multiplier. From the official ISED question bank, verified word for word.
Why
A frequency multiplier works by using a circuit tuned to resonate at a harmonic, which is a higher multiple of the input frequency. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits is section A-002 of the Advanced exam: Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.
Drill A-002 — free, no account