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BINA LIBRARY-COMMUNICATION SYSTEM -EXERCISE
- define modulation index .
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- how is the length of antenna choosen ?
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- what is the purpose of modulating signal ?
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- what is range of frequency employed is space communication ?
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- why are tv signal is not used ramitted sky waves ?
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- Define the term BASE BAND of message signal .
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- Why is AM used for broadcasting radio signal ?
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- mention the frequency at which TV signals are transmitted ?
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- what is the advantage of frquency modulation .
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- what is the advantage of amplitude modulation .
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- How is the critical frequency related to maximum electron density in ...
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- What type of transmission is used in TV broadcasting?
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- what is the range of wavelength of television broadcast ?
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- what are the side bands of an amplitude modulated wave ?
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- find an expression for bandwidth for amplitude modulation .
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- What is digital communication? Mention two advantages of digital commu...
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- what are the disadavanatages of analog communication .
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- Discuss the role of inosphere in radio-wave communication
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- what is pulse modulation? Explain.
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- Describe the basic postulates of Bohr's theory.
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