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Electronics Engineering Objective Questions { Analog Communication System }

204. In an AM transmitter after the modulation stage, class-C amplifier
A. can be used
B. cannot be used
C. either of the above
D. both (a) and (b)
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205. Which of the following statements is correct regarding demodulation?
A. It removes side-bands
B. It rectifies modulated signal
C. It is opposite of modulation
D. It is perfomed at the transmitting station
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206.  If carrier and modulating frequency are 100 kHz and 5 kHz respectively, the and width ofAM transmission will be
A. 2 IcHz
B. 5 kHz
C. 10 kHz
D. 40 IcHz
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207. A 4 kHz audio-signal modulates a 125 MHz carrier causing a frequency deviation of 5 kHz. The bandwidth of the narrow band FM signal is
A. 4 kHz
B. 8 kHz
C. 12 kHz
D. 20 kHz
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208. A phase modulation system gives advantages as compared to frequency modulation system for analog signals.
A. more
B. less
C. no specific
D. none of above
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209. Due to which of the following reasons full AM signal is preferred to SSB signal for broadcasting purpose?
A. Detection of full AM is simpler
B. Generation of full AM is easier
C. It requires larger bandwidth
D. None of the above
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210. The sound signal, in a T.V. broadcast, is modulated in
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