Modulation And Demodulation Mcqs
Q.1: Over modulation results in ______________?*
A. Weakening of the signal
B. Excessive carrier power
C. Distortion
D. None of the above
Q.2: Overmodulation (amplitude) occurs when signal amplitude is _____________ carrier amplitude?[
A. Equal to
B. Greater than
C. Less than
D. None of the above
Q.3: At 100% modulation, the power in each sideband is _____________ of that of carrier?S
A. 50%
B. 40%
C. 60%
D. 25%
Q.4: In amplitude modulation, bandwidth is ____________ the audio signal frequency?N
A. Thrice
B. Four times
C.
D. None of the above
Q.5: Modulation is done in____________________)
A. Transmitter
B. Radio receiver
C. Between transmitter and radio receiver&
D. None of the above
Q.6: In pakistan, ______________ modulation is used for radio transmission?F
A. Frequency
B. Amplitude
C. Phase
D. None of the above
Q.7: In amplitude modulation, the _____________of carrier is varied according to the strength of the signal?g
A. Amplitude
B. Frequency
C. Phase
D. None of the above
Q.8: If modulation is 100% then signal amplitude is ____________arrier amplitude?L
A. Equal to
B. Greater than
C. Less than
D. None of the above
Q.9: In an AM wave, the majority of the power is in _____________?=
A. Lower sideband
B. Upper sideband
C. Carrier
D. None of the above
Q.10: In an AM wave useful power is carrier by ______________?8
A. Carrier
B. Sidebands
C. Both sidebands and carrier
D. None of the above

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