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Electric Current(I)

What is the c...

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What is the carrier frequency in an AM wave when its highest frequency component is 850 Hz and the bandwidth of the signal is 50 Hz?

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Q. What is the carrier frequency in an AM wave when its highest frequency component is

850 H z

and the bandwidth of the signal is

50 H z

?

Q. An audio signal consists of two distinct sounds : one a human speech signal in the frequency band of

200 H z

2700 H z

, while the other is a high frequency music signal in the frequency band of

10200 H z

15200 H z

. The ratio of the AM signal bandwidth required to send both the signals together to the AM signal bandwidth required to send just the human speed is:

Q. For speech signals, frequency range 300 Hz to 3100 Hz is considered adequate. Therefore what is its bandwidth?

Q. In an FM system a

7 k H z

signal modulated

108 M H z

carries so that frequency deviation is

50 H z

. The carrier swing is

Q. (a) How is amplitude modulation achieved ?
(b) The frequencies of two side bands in an AM wave are 640 kHz and 660 kHz respectively. Find the frequencies of carrier and modulating signal. What is the bandwidth required for amplitude modulation ?

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