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प्रश्न
Write the functions of each of the following in communication system : Channel
उत्तर
Channel - It is the transmission medium through which the information is transferred from the transmitter end to the receiver end.
संबंधित प्रश्न
Draw a block diagram of generalized communication system.
Draw a neat, labelled block diagram for a generalised communication system.
What are the three basic units in communication systems ? Write briefly the function of each of these.
Any device that converts one form of energy into another is termed as ______.
(A) amplifier
(B) transducer
(C) receiver
(D) demodulator
For efficient radiation and reception of signal with wavelength λ, the transmitting antennas would have length comparable to ______.
(A)`lambda` of frequency used
(B)`lambda/2` of frequency used
(C )`lambda/3` of frequency used
(D)`lambda/4` of frequency used
Explain the terms : Receiver in communication system
What is the line of sight communication?
Answer the following question :
Write the functions of transducer and repeater ?
Explain, with the help of a suitable diagram, the space wave mode of propagation. Give two examples in communication systems where this mode is used. What is the frequency range of these waves? Give reason for using this range of frequency.
A transmitting antenna of height h and the receiving antenna of height 45 m are separated by a distance of 40 km for satisfactory communication in line of sight mode. Then the value of h is (given radius of the earth is 6400 km):
