Advertisements
Advertisements
प्रश्न
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
उत्तर
(D)`lambda/4` of frequency used
APPEARS IN
संबंधित प्रश्न
Draw a block diagram of generalized communication system.
Ionosphere mainly consists of _______.
Draw a neat, labelled block diagram for a generalised communication system.
Name the essential components of a communication system.
Distinguish between ‘Analog’ and ‘Digital’ forms of communication.
What are the three basic units in communication systems ? Write briefly the function of each of these.
Write any three applications of the Internet used in communication systems.
The figure given below shows the block diagram of a generalized communication system. Identify the element labelled 'X' and write its function.
Any device that converts one form of energy into another is termed as ______.
(A) amplifier
(B) transducer
(C) receiver
(D) demodulator
Draw a neat, labelled block diagram of a receiver for the detection of amplitude modulated wave.
Explain the terms : Receiver in communication system
Write the functions of each of the following in communication system : Channel
Which basic mode of communication is used in satellite communication?
Distinguish between a transducer and a repeater.
What is the line of sight communication?
What type of wave propagation is used in the basic mode of communication?
Write, giving a reason, the frequency range used in this mode of communication of propagation.
Explain the basic concept of mobile telephoning.
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):
Which of the following is the communication channel in case of radio communication?
