Home
Class 11
PHYSICS
If a number of sine waves with modulatio...

If a number of sine waves with modulation indices `n_(1),n_(2),n_(3)`… modulate a carrier wave, then total modulation index (n) of the wave is

A

`n_(1)+n_(2)...+2(n_(1)+n_(2)......)`

B

`sqrt(n_(1)-n_(2)+n_(3).......)`

C

`sqrt(n_(1)^(2)+n_(2)^(2)+n_(3)^(2).......)`

D

`sqrt(n_(1)+n_(2)+........)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Competitive Thinking|46 Videos
  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Evaluation Test|15 Videos
  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Evaluation Test|15 Videos
  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

What is the modulation index of an over modulated wave

Assertion : Modulation index is the degree to which the carrier wave is modulated . Reason : For the strong and clear reception, the value of modulation index should be very small.

Each quarter of a vessel of depth H is filled with liquids of the refractive indices n_(1), n_(2),n_(3) and n_(4) from the bottom respectively . The apparent depth of the vessel when looked normally is

A ray of light passes through four transparent media with refractive index n_(1) ,n_(2),n_(3) and n_(4) as shown, the surface of all media are parallel If the emergent ray DE is parallel to incident ray AB, then

A modulated signal is represented as x(1) = 6 sin 1250 t + sin 10^(8) t then the mudulating index is

TARGET PUBLICATION-COMMUNICATION SYSTEMS-Critical Thinking
  1. The audio signal used to modulate 30 sin (2pixx10^(6) t ) is 15 ...

    Text Solution

    |

  2. What is the modulation index of an over modulated wave

    Text Solution

    |

  3. If a number of sine waves with modulation indices n(1),n(2),n(3)… modu...

    Text Solution

    |

  4. Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50V is a...

    Text Solution

    |

  5. In space communcation , the information can be passed from on place ...

    Text Solution

    |

  6. The maximum usable frequency in F-layer with original frequency in 50 ...

    Text Solution

    |

  7. In which of the region of earth's atmosphere temperature decreases wit...

    Text Solution

    |

  8. If the frequency of E.M radiations is halved then the energy of EM ra...

    Text Solution

    |

  9. The sky wave propagation is suitable for radio waves of frequency

    Text Solution

    |

  10. mesosphere reflects which of them following type of wave, particularly...

    Text Solution

    |

  11. A geo-synchronous satellite is:

    Text Solution

    |

  12. The height of a T.V. tower is 300 m. What is the maximum distance upto...

    Text Solution

    |

  13. Electromagnetic waves of frequencies higher than 9sqrt(2) MHz are foun...

    Text Solution

    |

  14. The maximum line-of -sight distance d(M) between two antennas having h...

    Text Solution

    |

  15. A transmitting antenna at the top of a tower has a height of 50 m and ...

    Text Solution

    |

  16. When an electromagnetic wave enters the ionised layer of ionosphere,...

    Text Solution

    |

  17. for the first pair of side band frequencies, band width required for a...

    Text Solution

    |

  18. In FM, frequency deviation is

    Text Solution

    |

  19. Consider an optical communication system operating at lambda=800 nm. S...

    Text Solution

    |

  20. A telephone link operating at a center frequency of 10 GHz is etablish...

    Text Solution

    |