22.  Demodulation
A. is performed at the transmitting station
B. removes side-bands
C. rectifies modulated signal
D. is opposite of modulation

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23.  100% modulation is produced in AM when carrier
A. frequency equals signal frequency
B. frequency exceeds signal frequency
C. amplitude equals signal amplitude
D. amplitude exceeds signal amplitude

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24.  For a given carrier wave, maximum undistorted power is transmitted when value of modulation is
A.1
B.0.8
C.0.5
D.0

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25.  In an AM wave with 100 percent modulation, each sideband carries of the total transmitted power.
A. one?half
B. one?sixth
C. one?third
D. two?third

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26.  Given a carrier frequency of 100 kHz and a modulating frequency of 5 kHz, the band width of AM transmission is ?kHz. .
A.5
B.200
C.10
D.20

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27.  In AM transmission with m = 1, suppression of carrier outs power dissipation by a factor of
A.6
B.2
C.3
D.4

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28.  As compared to DSB-FC, 100% modulated transmission, power saving in SSB-SC system is ?per cent.
A.94.4
B. c0
C.(b) 100
D.u)83.3

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