Home
Class 12
PHYSICS
Frequency modulation and phase modulatio...

Frequency modulation and phase modulation together is referred as

A

amplitude modulation

B

angle modulation

C

power modulation

D

wave modulation

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Space communication )|58 Videos
  • COMMUNICATION SYSTEMS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Examples for Practice)|8 Videos
  • COMMUNICATION SYSTEMS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Need for modulation)|17 Videos
  • CIRCULAR MOTION

    NIKITA PUBLICATION|Exercise Multiple Choice Question|421 Videos
  • CURRENT ELECTRICITY

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|314 Videos

Similar Questions

Explore conceptually related problems

In frequency modulation

What is phase modulation ?

Modulators

In frequency modulated wave

(a) If A and B represent the maximum amplitudes of an amplitude modulated wave, wrigte the expression for the modulation index in terms of A and B. (b) A message signal of frequency 20 kHz and peak voltage 10 V is used to modulate a carrier of frequency 2 MHz and peak voltage of 15 V. Calculate the modulation index. Why the modulation index is generally less than one ?

In frequency modulation, the frequency of the modulated wave varies as

In an amplitude modulation with modulation index 0.5 the ratio of the carrier wave to that of side band in the modulated wave is

In frequency modulation, the amount of frequency deviation depends on the

Define modulation and demodulation. Explain the need for modulation.

A modulated signal C_m(t) has the form C_m(t) = 30 sin 300pi t + 10 (cos 200pit – cos 400pi t) . The carrier frequency f_c the modulating frequency (message frequency) f_Omega and the modulation index mu are respectively given by :

NIKITA PUBLICATION-COMMUNICATION SYSTEMS-Multiple Choice Questions (Production and detection of amplitude modulated wave)
  1. The process in which frequencies of carrier wave changes in accordance...

    Text Solution

    |

  2. The process in which phase of carrier wave changes in accordance with ...

    Text Solution

    |

  3. Frequency modulation and phase modulation together is referred as

    Text Solution

    |

  4. The ratio of peak value of modulated signal to peak value of carrier ...

    Text Solution

    |

  5. To avoid distortion in the signal, modulation index should be

    Text Solution

    |

  6. In amplitude modulation, the bandwidth is

    Text Solution

    |

  7. The process of recovering the audio signal from the modulated wave is ...

    Text Solution

    |

  8. An electronic device which recovers the original audio signal from amp...

    Text Solution

    |

  9. Which of the following is application of amplitude modulation ?

    Text Solution

    |

  10. Citizen's band ratio is the application of

    Text Solution

    |

  11. Draw backs of Amplitude modulation

    Text Solution

    |

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

    Text Solution

    |

  13. Amplitude modulation is useful for broadcasting in communication syste...

    Text Solution

    |

  14. The maximum peak ro peak voltage of an AM wire is 24 mV and the minimu...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. What type of modulation is employed in india for radio transmission

    Text Solution

    |

  18. If audio signal is tranmitted directly into space, the length of the t...

    Text Solution

    |

  19. In amplitude modulation

    Text Solution

    |

  20. Modulation factor determines-

    Text Solution

    |