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WorksheetsWeek 3
Total questions: 10
Worksheet time: 10mins
What is the main reason for suppressing the carrier in DSBSC modulation?
To increase the power of the transmitted signal.
To reduce the bandwidth of the transmitted signal.
To eliminate the carrier power, which carries no information.
To simplify the receiver circuitry.
In DSBSC modulation, what is the bandwidth of the transmitted signal?
fm
2fm
fc
fc+fm
Which of the following is a characteristic of DSBSC modulation?
The carrier is fully transmitted.
Both sidebands are transmitted, but the carrier is suppressed.
Only one sideband is transmitted.
The carrier and one sideband are transmitted.
What is the efficiency of DSBSC modulation compared to DSBFC?
50%
66.67%
100%
33.33%
Which method is used to generate SSBSC signals by selecting one sideband using a filter?
Phasing method
Filtering method
Balanced modulator method
Indirect method
In SSBSC modulation, what happens to the carrier and one sideband?
Both are transmitted.
The carrier is transmitted, and one sideband is suppressed.
The carrier is suppressed, and one sideband is transmitted.
Both are suppressed.
What is the main advantage of SSBSC over DSBSC?
Higher power efficiency.
Reduced bandwidth requirement.
Simpler receiver circuitry.
Higher carrier power.
Which of the following is a disadvantage of DSBSC modulation?
It requires more bandwidth than SSBSC.
It is less power-efficient than DSBFC.
It cannot be demodulated using an envelope detector.
It requires a highly complex transmitter.
What is the purpose of the balanced modulator in DSBSC generation?
To amplify the carrier signal.
To suppress the carrier and generate sidebands.
To filter out one sideband.
To demodulate the signal.
In VSB (Vestigial Sideband) modulation, what is transmitted along with one sideband?
The full carrier and a portion of the other sideband.
Only the carrier.
A portion of the carrier and a portion of the other sideband.
Only one sideband.
