This set of Analog Communication Multiple Choice Questions & Answers (MCQs) focuses on “Demodulation of VSB Modulated Wave”.
1. AM stands for ________
a) Amplitude Modulation
b) Audio Modulation
c) Antenna Modulation
d) Amplified Modulation
2. What is the equation for full-carrier AM?
a) V(t) = (Ec + Em) × (sin ωc t)
b) V(t) = (Ec + Em) × (sin ωm t) + (sin ωc t)
c) V(t) = (Ec × Em) × (sin ωm t) × (sin ωc t)
d) V(t) = (Ec + Em sin ωm t) × (sin ωc t)
3. What is the reason of “envelope” in an amplitude modulated signal?
a) noise signal
b) carrier signal
c) nematic signal
d) baseband signal
4. What is the cause of Overmodulation?
c) both distortion and splatter
d) half reception of signals
5. The modulation index can be derived from ________
a) frequency-domain signal
b) time-domain signal
c) both frequency and time domain signal
d) a highly modulated carrier wave
6. At peak modulation an SSB transmitter radiate 1000W, what will it radiate with no modulation?
a) 1000 watts
b) 500 watts
c) 250 watts
d) 0 watts
7. If AM radio station increases its modulation index then the audio gets louder at the receiver.
8. A single sideband modulation system is more efficient than a plain amplitude modulated system.
9. Why AM stations has “low-fidelity”?
a) AM is susceptible to noise
b) Commercial AM stations use low power
c) Commercial AM stations have a narrow bandwidth
d) High quantization to noise ratio