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What is attenuation in communication sys...

What is attenuation in communication system ?

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the loss of signal strength during its propagation through the communication channel called attenuation.
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SUNSTAR PUBLICATION-ANNUAL EXAM QUESTION PAPER MARCH -2015-PART-A
  1. name the spectral series of hydrogen which lies in the ultraviolet reg...

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  2. What is meant by specific binding energy ?

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  3. What is attenuation in communication system ?

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  4. Write Coulomb's law in vector form and explain the terms.

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  5. Give any two practical limitations of Ohm's law.

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  6. List the properties of magnetic field lines.

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  7. Current in a coil falls from 2.5a to 0.0a in 0.1 second inducing an em...

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  8. Mention two applications of infrared radiation.

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  9. Draw the ray diagram of image formation in case of compound microscope

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  10. what is photo diode? Mention its one use.

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  11. Draw the block diagram of generalised communication system.

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  12. Derive an expression for capacitance of a paralle plate capacitor

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  13. How is galvanometer converted into an ammeter?

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  14. Distinguish between diamagnetic and paramagnetic substances.

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  15. Derive the expression for emf induced in a straight conductor moving p...

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  16. Show that voltage in an inductor leads the current by pi//2 rad for ...

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  17. what is interference ? Write the condition for path difference in case...

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  18. Derive an expression for the radius of n^(th) Bohr's orbit of hydrogen...

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  19. Distinguish between conducor and semiconductor on the basis of theory ...

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  20. Obtain an expression for the electric field intenstiy at a point on th...

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