Home
Class 12
PHYSICS
A sinusoidal carrier wave of amplitude 4...

A sinusoidal carrier wave of amplitude 40 V is amplitude modulated by a sinusoidal signal voltage. What is the amplitude of each side band if the modulation index is 25%.

A

5V

B

4V

C

6V

D

18V

Text Solution

Verified by Experts

The correct Answer is:
A
Ac=40V and `mu=25% =0.25`
`:.` Amplitude of each side band `=(muA_(c))/(2)=(0.25 xx 40)/(2)=5V `
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise Exercise 2|15 Videos

  • COMMUNICATION SYSTEM

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHC CET Corner|6 Videos

  • COMMUNICATION SYSTEM

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHC CET Corner|6 Videos

  • CIRCULAR MOTION

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|21 Videos

  • CURRENT ELECTRICITY

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|32 Videos

Similar Questions

Explore conceptually related problems

When a sinusoidal carrier wave of voltage amplitude 3 kV is amplitude modulated by a sinusoidal signal voltage, two side bands each of amplitude 600 V are produced. What is the modulation index ?

If a carrier wave of amplitude 10mV is modulated by an audio signal of amplitude 2mV , then amplitude of LSF or USF is given by

If a carrier wave of amplitude 20mV is modulated by an audio signal of amplitude 4mV , then amplitude of LSF or USF is given by

A sinusoidal carrier voltage of 120 V is amplitude modulated by a sinusoidal voltage of frequency 10KHz. What is the modulation index if the maximum modulated carrier amplitude is 150 V ?

A sinusoidal carrier wave of amplitude 80 V and frequency 600 KHz is amplitude modulated by a sinusoid voltage of frequency 30 KHz. What is the ratio of upper and lower side band frequencies ?

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

A carrier wave with amplitude of 250 V is amplitude modulated by a sinusoidal base band signal of amplitude 150 V. The ratio of minimum amplitude to maximum amplitude for the amplitude modulated wave is 50 : x, then value of x is _________ .

A carrier wave with amplitude of 250 V is amplitude modulated by a sinusoidal base band signal of amplitude 150 V. The ratio of minimum amplitude to maximum amplitude for the amplitude modulated wave is 50 : x, then value of x is _________ .

Why is the amplitude of modulating signal kept less than the amplitude of carrier wave ?

A sinusoidal carrier voltage of frequency 1200 kHz is amplitude modulated by a sinusoidal voltage of frequnecy 20 kHz. The maximum and minimum modulated carrier amplitudes of 100 V and 90 V are produced. Calculate the frequency of lower and upper side bands, unmodulated carrier amplitude, modulation index and amplitude of each side band.

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-COMMUNICATION SYSTEM-Exercise 1
  1. Ozone layer above earth's atmosphere will not

    Text Solution

    |

  2. The air of earth's atmosphere responsible for absorbing a large port...

    Text Solution

    |

  3. Match the following column I and Column II

    Text Solution

    |

  4. A radiowave that travels in a straight line from the transmitting ante...

    Text Solution

    |

  5. In process of amplitude modulation of signal to be transmitted . S...

    Text Solution

    |

  6. In amplitude modulation, carrier wave frequencies are:

    Text Solution

    |

  7. In a detector, output circuit consists of R = 10kOmega and C = 100 p F...

    Text Solution

    |

  8. For efficient transmission, transmitting antenna has length comparable...

    Text Solution

    |

  9. A radio transmitter radiates 1 kW power at a wavelength 198.6 m. How m...

    Text Solution

    |

  10. A 100 m long anteena is mounted on a 500 m tall building. The complex ...

    Text Solution

    |

  11. A 1000 kHz carrier wave is modulated by an audio signal of frequency r...

    Text Solution

    |

  12. In frequency modulation

    Text Solution

    |

  13. In frequency modulated wave

    Text Solution

    |

  14. A speech signal of 3 kHz is used to modulate a carrier signal of frequ...

    Text Solution

    |

  15. A transducer , in communication system in a device that

    Text Solution

    |

  16. In an amplitude modulated wave , the maximum amplitude is 10V and th...

    Text Solution

    |

  17. Which of the following is not transducer?

    Text Solution

    |

  18. An oscillator is producing FM waves of requency 2kHz with a variation ...

    Text Solution

    |

  19. A modulating signal is a square wave as shown in the following figur...

    Text Solution

    |

  20. A sinusoidal carrier wave of amplitude 40 V is amplitude modulated by ...

    Text Solution

    |