16FM is less affected by noise than AM because:AFM has no carrierBNoise mainly affects amplitudeCFM uses lower frequenciesDFM uses less bandwidthView AnswerDiscussWorkspaceReportSaveEasy
17Image frequency in a superheterodyne receiver equals:ASignal frequency − IFB2 × signal frequencyCIF onlyDSignal frequency + 2 × IFView AnswerDiscussWorkspaceReportSaveEasy
18In frequency modulation, the carrier's ____ varies with the message.APower onlyBAmplitudeCFrequencyDPhase onlyView AnswerDiscussWorkspaceReportSaveEasy