The AM modulation index compares modulation excursions to what level?
AAntenna length
BUnmodulated carrier
CNoise floor level
DSideband power
Answer & Solution
Correct answer: B. Unmodulated carrier
The index is the ratio of the modulation excursions to the level of the unmodulated carrier.
Keep practising Communication Systems
Browse all Communication Systems questions for Bihar Board Class 12 (Science), or explore more Physics topics.
Related questions
In plate modulation, audio power needed is what share of RF carrier power?An automatic call distributor does what?Before transmission the transmitter modifies the electric signal forRepeated skipping of a signal between Earth and ionosphere is calledWhat does near-vertical-incidence skywave (NVIS) enable?Signals above about 30 MHz mostly do what to the ionosphere?What mainly causes fading of skywave signals?Why can skywaves reach beyond the horizon?