Advanced Qualification · A-006 Receivers · A-006-005-005
What causes intermodulation in an electronic circuit?
- A Too little gain
- B Positive feedback
- C Lack of neutralization
- D Nonlinear circuits or devices
Correct answer: D — Nonlinear circuits or devices. From the official ISED question bank, verified word for word.
Why
Intermodulation happens when two or more signals mix inside a circuit that does not respond in a straight line, meaning the output does not simply copy the input. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.