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प्रश्न
Draw a neat, labelled block diagram of a receiver for the detection of amplitude modulated wave.
उत्तर
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संबंधित प्रश्न
Draw a block diagram of generalized communication system.
Ionosphere mainly consists of _______.
Name the essential components of a communication system.
Distinguish between ‘Analog’ and ‘Digital’ forms of communication.
Explain briefly two commonly used applications of the ‘Internet’.
What are the three basic units in communication systems ? Write briefly the function of each of these.
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
Write the functions of each of the following in communication system : Channel
Distinguish between a transducer and a repeater.
What is the line of sight communication?
Write, giving a reason, the frequency range used in this mode of communication of propagation.
Answer the following question :
Write the functions of transducer and repeater ?
Name the type of waves which are used for line of sight (LOS) communication. What is the range of their frequencies?
A transmitting antenna at the tope of a tower has a height of 20 m and the height of the receiving antenna is 45 m. Calculate the maximum distance between them for satisfactory communication in LOS mode. (Radius of the Earth = 6.4 × 106 m)
Mention the function of any two of the following used
(i) Transducer
(ii) Repeater
(iii) Transmitter
(iv) Bandpass Filter
Explain the function of a repeater in a communication system.
Explain the terms (a) Transducer and (b) Attenuation in communication system.
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):
