Home
Class 11
PHYSICS
A message signal of frequency 10kHz and ...

A message signal of frequency `10kHz` and peak voltage of `10"volts"` is used to modulate a carrier of frequency `1 MHz` and peak voltage of `20"volts"`. Determine
(`a`) modulation index
(`b`) the side bands produced.

Text Solution

Verified by Experts

(a) Modulation index `= 10//20 = 0.5`
(b) The side bands are at `(1000 + 10 kHz) = 1010 kHz and (1000-10 kHz) = 990 kHz`
Promotional Banner

Topper's Solved these Questions

  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-1(Exercise-01)|53 Videos
  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-1(Exercise-02)|19 Videos
  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-2(Example)|15 Videos
  • SEMICONDUCTORS

    ALLEN |Exercise Part-3(Exercise-4)|50 Videos

Similar Questions

Explore conceptually related problems

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 :-

A 100 MHz xarrier wave frequency is modulated by 10 kHz sinusoidal modulating signal. If the maximum frequency deviation is 50 kHz, find the modulation index.

The modulation index of an FM carrier having a carrier swing of 200kHz and a modulating signal 10kHz is

A modulated signal C_m(t) has the form C_m(t) = 30 sin 300pi t + 20 (cos 100pit) . The carrier frequency f_c the modulating frequency (message frequency) f_Omega and the modulation index mu are respectively given by :

The series combination of R (Omega) and capacitor C(F) is connected to an A.C. source of V volts and angular frequency omega . If the angular frequency is reduced to omega/3 , the current is found to be reduced to one-half without changing the value of the voltage. Determine the ratio of the capacitive reactance and the resistance.

If electron is accelerated by 1.0 xx 10^(4) volt than calculate kinetic energy frequency and wavelength

A cyclotron's oscillator frequency is 10 MHz. What should be the operating magnetic field for accelerating protons ? If the radius of its 'dees' is 60 cm, what is the kinetic energy (in MeV) of the proton beam produced by the accelerator. (e=1.60xx10^(-19)C,m_(p)=1.67xx10^(-27kg),1MeV=1.6xx10^(-13)J)

In the circuit the rms value of voltage across the capacitor C, inductor L and resister R_(1) are respectively 5sqrt(5V) , 10 V and 5V. Then the peak voltage a cross R_(2) is

ALLEN -WAVES AND OSCILLATIONS-Part-3(Example)
  1. Differentiate zener and avalance breakdown.

    Text Solution

    |

  2. A sinusoidal voltage of amplitude 25 volts and frequency 50 Hz is appl...

    Text Solution

    |

  3. The halfwave rectifier supplies power to be 1 k Omega. The input suppl...

    Text Solution

    |

  4. A fullwave rectifier supplies a load of 1 k Omega. The a.c voltage app...

    Text Solution

    |

  5. A fullwave P.N diode rectifier used load resistor of 1500 Omega. No fi...

    Text Solution

    |

  6. A zener diode of voltage V(Z)(=6 volt) is used to maintain a constant ...

    Text Solution

    |

  7. A Zener diode is specified having a breakdown voltage of 9.1 V with a ...

    Text Solution

    |

  8. In a transistor, the value of beta is 50. Calculate the value of alpha

    Text Solution

    |

  9. Calculate the collector and emitter current for which I(b) = 20 mA, be...

    Text Solution

    |

  10. For a common emitter amplifier, current gain = 50. If the emitter curr...

    Text Solution

    |

  11. Transistor with beta = 75 is connected to common-base configuration. W...

    Text Solution

    |

  12. The base current is 100 muA and collector current is 3 mA (a) Calcul...

    Text Solution

    |

  13. In npn transistor circuit, the collector current us 10 mA. If 95 % of ...

    Text Solution

    |

  14. In an NPN transistor 10^(10) electrons enter the emitter in 10^(-6)s a...

    Text Solution

    |

  15. TV transmission tower at Kota has a height of 80 m. Radius of earth is...

    Text Solution

    |

  16. A ground reciver is receiving a signal at (a) 5 MHz, and (b) 100 MHz, ...

    Text Solution

    |

  17. A separate high freq. wave (i.e. carrier wave) is needed in modulation...

    Text Solution

    |

  18. A message signal of frequency 10kHz and peak voltage of 10"volts" is u...

    Text Solution

    |

  19. The modulation index of an FM carrier having a carrier swing of 200kHz...

    Text Solution

    |

  20. A 100 MHz xarrier wave frequency is modulated by 10 kHz sinusoidal mod...

    Text Solution

    |