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)
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
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
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
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
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
210. The sound signal, in a T.V. broadcast, is modulated in
A.AM
B. VSB
C. FM
D. SSB
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