In the amplitude modulation mode of transmission, the normal speed signal is with a maximum frequency of $5\, kHz$. If the carrier frequency is $200\, kHz$, the modulated signal will have the frequencies varying between
- 190 kHz to 210 kHz
- 195 kHz to 205 kHz
- 195 kHz to 200 kHz
- 200 kHz to 205 kHz
The Correct Option is B
Solution and Explanation
and message signal frequency $f_{m}=5 \,kHz$.
In amplitude modulation the lower and upper side frequencies are given as,
$f_{\max }=f_{c}+f_{m}$
and $f_{\min }=f_{c}-f_{m}$
So, by putting the values, we get
$f_{\max }=200+5=205 \,kHz$
and $f_{\min }=200-5=195 \,kHz$
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Concepts Used:
Communication Systems
A system that describes the information exchange between two points is called the communication system. The transmission and reception process of information is called communication. The major elements of communication are such as:
- The Transmitter of information
- Channel or medium of communication
- The Receiver of information
Examples Of Communication Systems:
The following are the examples of communication systems:
- Internet
- Public Switched Telephone network
- Intranet and Extranet
- Television
Types Of Communication Systems:
Turning on Signal specification or technology, the communication system is categorized as follows:
- Analog technology communicates data as electronic signals of differing frequencies or amplitude. For instance Broadcast and telephone transmission.
- In Digital technology, the data are created and processed in two states: High (represented as 1) and Low (represented as 0). Also this technology stores and transmits data in the form of 1's and 0's.
Elements of a Communication System:
