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BINA LIBRARY-COMMUNICATION SYSTEM -EXERCISE
- Describe the basic postulates of Bohr's theory.
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- What are the two basic modes of communicatiuons?
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- What is demodulation? Why is satellite communication necessary for TV ...
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- What sign (+ve or-ve) is given to the focal length of a concave mirror...
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- mention the function of shunt capacitor ?
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- Draw block diagram of a generalized communication system.
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- Compare AM with FM wave.
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- Draw a labelled block diagram of a radio transmitter.
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- What are the different transmission media for communication?
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- Define the term noise used in electronic communication
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- Disucss briefly the three modes of propagation of electromagnetic wave...
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- Why is modulation necessary?
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- What is amplitude modulation? Explain with diagram.
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- What sign (+ve or-ve) is given to the focal length of a convex mirror?
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- For long distance radio broadeast, we use short wave only. Why?
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- Why satellites are used for long distance TV transmission.
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- in what respects radio waves and gamma rays are different ?
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- Why sky wave are not used in television signals.
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- expalin why Tv transmission are usually made high .
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- why high frequency carrier waves are employed for transmission ?
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