ETC EngineeringMCQs
Home › Communication Systems › In conventional amplitude modulation, which carrier parameter is varied according to the message signal?
MCQ Practice Question
Communication SystemsAmplitude Modulation

In conventional amplitude modulation, which carrier parameter is varied according to the message signal?

  • AAmplitude
  • BFrequency
  • CPhase only
  • DPropagation velocity
Report an error
Correct Answer: A. Amplitude
Explanation: In AM, the carrier amplitude varies in accordance with the instantaneous message signal while carrier frequency and phase remain nominally constant.
Reference: Standard communication systems: amplitude modulation
Continue practicing: Communication Systems MCQs or browse all MCQs.