Advertisements
Advertisements
प्रश्न
Explain the term demodulation used in a communication system.
With reference to communication systems, what is meant by demodulation?
Advertisements
उत्तर
Demodulation is the process of retrieving information from the carrier wave at the receiver end. It is the reverse process of modulation.
संबंधित प्रश्न
Explain the terms : Transmitter in communication system
Write the functions of the following in communication systems:
Transmitter
Write the functions of the following in communication systems:
Modulator
Write the functions of the following in communication systems:
Receiver
Explain the basic concept of mobile telephoning ?
Distinguish between point to point and broadcast modes of communication. Give an example of each.
Write the functions of the transducer and repeaters.
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.
An audio signal is modulated by a carrier wave of 20 MHz such that the bandwidth required for modulation is 3 kHz. Could this wave be demodulated by a diode detector which has the values of R and C as
- R = 1 kΩ, C = 0.01 µF.
- R = 10 kΩ, C = 0.01 µF.
- R = 10 kΩ, C = 0.1 µF.
