Frequency Domain Representation MCQ’s

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This set of Analog Communication Multiple Choice Questions & Answers (MCQs) focuses on “Frequency Domain Representation”.

1. The amount of power and bandwidth necessary to be transmitted for a given amount of information are reduced in _________
a) Single Sideband Modulation
b) Double Sideband Modulation
c) Vestigial Sideband Modulation
d) Amplitude Modulation

2. A long wave AM broadcast transmitter needs _________
a) very small carrier power
b) very large carrier power
c) small carrier power
d) large carrier power

3. The spectrum of white noise and impulse noise is similar in terms of ________
a) magnitude spectrum
b) phase spectrum
c) both magnitude spectrum and phase spectrum
d) amplitude spectrum

4. In FM, if we decreases modulating frequency then the modulation index ________
a) will increase, if the modulating voltage amplitude increases
b) will decrease, if the modulating voltage amplitude increases
c) will increase, if the modulating voltage amplitude remains constant
d) will decrease, if the modulating voltage amplitude remains constant

5. In SSB modulation, only a single sideband is transmitted leaving the other sideband and the carrier.
a) True
b) False

6. A noise can be represented as superposition of spectral components.
a) True
b) False

7. Which of the following modulation system is used for video-modulation?
a) DSB-SC
b) SSB-SC
c) VSB
d) FM

8. For demodulation of PCM, it is first converted into __________
a) PDM
b) PWM
c) PPM
d) PAM

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