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(i) Define modulation index. (ii) Why ...

(i) Define modulation index.
(ii) Why is the amplitude of modulating signal kept less than the amplitude of carrier wave ?

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OSWAAL PUBLICATION-Sample Paper 6-Exercise
  1. Draw the block diagram of generalised communication system.

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  2. Obtain an expression for the capacitance of a spherical conductor.

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  3. (i) Define modulation index. (ii) Why is the amplitude of modulating...

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  4. Why is the amplitude of modulating signal kept less than the amplitude...

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  5. Draw Wheatstone bridge and write the condition for balance.

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  6. Derive the expression for the energy stored in a parallel plate capaci...

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  7. Explain the construction of transformer. Mention its principle.

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  8. Define .dielectric constant. of a medium. Briefly explain why the capa...

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  9. Write any four characteristics of electromagnectic waves. Give two use...

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  10. Write any four characteristics of electromagnectic waves. Give two use...

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  11. Name the phenomenon in which an emf is induced in a coil due to the ch...

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  12. Explain the use Zener diode as a voltage regulator.

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  13. Write Einsten.s photoelectric equation and point out any two character...

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  14. State radioactive decay law. Derive N=N0e^(-lambdat) for a radioactiv...

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  15. Derive the expression for lateral shift produced when a ray of light p...

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  16. What is amplification? With a circuit diagram, explain the working of ...

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  17. Explain the experiment to determine the resistivity of the material of...

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  18. A small compass needle of magnetic moment .m. is free to turn about an...

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  19. A compass needle, free to turn in a vertical plane orients itself wit...

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  20. A compass needle, free to turn in a vertical plane orients itself wit...

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