Home
Class 11
PHYSICS
An oscillator is producing FM waves of f...

An oscillator is producing FM waves of frequency `2kHz` with a variation of `10kHz`. What is modulating index?

A

`0 . 20`

B

`5 . 0`

C

`0 . 67`

D

`1. 5`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Evaluation Test|15 Videos

  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Critical Thinking|34 Videos

  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

A message signal of 12 kHz and peak voltage 20 V is used to modulate a carrier wave of frequency 12 MHz and peak voltage 30 V. Calculate the (i) modulation index (ii) side- band frequencies.

A siren placed at a railway platform is emitting a sound of frequency 5 kHz. A passenger sitting in a moving train ‘A’ records the frequency of the siren as 5.5 kHz. During his return journey by train ‘B’ he records the frequency of the siren as 6 kHz. The ratio of the speed of train B to that of train A is

For an EM wave propagations along x direction, the magnetic field oscillates along the z-direction at a frequency of 3 xx 10^10 Hz and has amplitude of 10^-9 T. What is the wavelength of the wave?

A sinusoidal carrier wave of frequency 1 MHz and amplitude 100 V is amplitude modulated by sinusoidal voltage of frequency 4 kHz producing 50% modulation. The frequencies of lower and upper side band terms are respectively,

When carrier wave of 2 . 5 MHz frequency is amplitude modulated, the resulting AM wave has maximum of 15 V and minimum amplitude of 10 V . The modulation index is __________.

A single of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are :-

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

    Text Solution

    |

  2. A message signal of 12 kHz and peak voltage 20 V is used to modulate a...

    Text Solution

    |

  3. An oscillator is producing FM waves of frequency 2kHz with a variation...

    Text Solution

    |

  4. When carrier wave of 2 . 5 MHz frequency is amplitude modulated, the ...

    Text Solution

    |

  5. The equation of an FM signal is e = 6 sin (10^(6) t + 4 sin 10^(3) t )...

    Text Solution

    |

  6. The distance of coverage of a transmitting antenna is 12 . 8 km . Then...

    Text Solution

    |

  7. If a transmitting antenna of height 105 m is placed on a hill, then it...

    Text Solution

    |

  8. A radar has a power of 1 kW and is operating at a frequency of 10 GHz ...

    Text Solution

    |

  9. Height of T .V . Tower is h(T) . The area of transmission of T . V . W...

    Text Solution

    |

  10. In an amplitude modulated wave for audio frequency of 500 "cycle"//sec...

    Text Solution

    |

  11. A modem is a

    Text Solution

    |

  12. The electromagnetic wave of frequency 3 MHz to 30 MHz are used

    Text Solution

    |

  13. In which frequency range, space waves are normally propagated?

    Text Solution

    |

  14. Name the type of waves which are used for line of sight (LOS) communic...

    Text Solution

    |

  15. The ionosphere is used for the propagation of

    Text Solution

    |

  16. The maximum frequency of transmitted radio waves above which the radio...

    Text Solution

    |

  17. For sky wave propagation of a 10 MHz signal, what should be the minimu...

    Text Solution

    |

  18. A sky wave with a frequency 55 MHz is incidenet on D-region of earth's...

    Text Solution

    |

  19. A diode detector is used to detect an amplitude modulated wave of 60% ...

    Text Solution

    |

  20. A telephonic communication service is working at carrier frequency of ...

    Text Solution

    |