Advertisements
Advertisements
प्रश्न
Write the functions of the following in communication systems:
Demodulator
उत्तर
Demodulator is important components of communication systems. Its functions are as follows:
Demodulator: A demodulator demodulates the modulated signal, i.e. it separates the low frequency message signal that has been superimposed on high frequency carrier wave and retrieves the information from the carrier wave at the receiver.
APPEARS IN
संबंधित प्रश्न
What is the function of a 'Repeater' used in communication system?
Write the functions of the following in communication systems:
Modulator
Write the functions of the following in communication systems:
Receiver
Distinguish between broadcast mode and point-to-point mode of communication and give one example for each.
A device X used in communication system can convert one form of energy into another. Name the device X. Explain the function of a repeater in a communication system.
Distinguish between point to point and broadcast modes of communication. Give an example of each.
Write the functions of the transducer and repeaters.
A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate of – 2dB per km. If the communication channel has a total length of 5 km, the power of the signal received is `["gain in dB" = 10 log ("P"_0/"P"_"i")]`
A basic communication system consists of ______.
- transmitter.
- information source.
- user of information.
- channel.
- receiver.
Choose the correct sequence in which these are arranged in a basic communication system:
Which of the following would produce analog signals and which would produce digital signals?
- A vibrating tuning fork.
- Musical sound due to a vibrating sitar string.
- Light pulse.
- Output of NAND gate.
