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प्रश्न
What is the function of a 'Repeater' used in communication system?
Write the functions of the following in communication systems:
Repeater
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उत्तर १
A repeater is used to increase the range of the transmission in communication systems with the help of a set of receiver and transmitter.
उत्तर २
Repeater: A repeater is a combination of a receiver and a transmitter. It picks up the signal from a transmitter, amplifies it and retransmits it. A repeater is mainly used to extend the range of a communication system.
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संबंधित प्रश्न
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 term demodulation used in a communication system.
Explain the basic concept of mobile telephoning ?
Distinguish between point to point and broadcast modes of communication. Give an example of each.
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.
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.
