Home
Class 11
PHYSICS
Which of the following four alternatives...

Which of the following four alternatives is not correct, We need modulation :-

A

To increase th selectivity

B

To reduce the time lag between transmission and reception of the information signal

C

to reduce the size of antenna

D

To reduce the fractional band width, that is the ration of the signal band width to the centre frequency

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-3)|27 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN|Exercise EXERCISE-IV|8 Videos

  • WAVES AND OSCILLATIONS

    ALLEN|Exercise Part-1(Exercise-05)[B]|42 Videos

Similar Questions

Explore conceptually related problems

Which of following four alternatives is not correct? We need modulation:

In modulation we

Which of the following is/are correct with respect to frequency modulation

Explain the need for modulation.

Which of the following is correct for immuno-modulators?

In the following question, out of the four alternatives, select the correct Spelt word .

In the following question out of the four alternatives select the alternative which will improve the bracketed part of the sentence in case no imporvement is needed select no improvement The tropical storm_______a hurricane

ALLEN-SEMICONDUCTORS-Part-3(Exercise-4)
  1. The question has statement - 1 and statement - 2 Of the four choices ...

    Text Solution

    |

  2. The output of an OR gate is connected to both the inputs of a NAND gat...

    Text Solution

    |

  3. Which of the following four alternatives is not correct, We need modul...

    Text Solution

    |

  4. Truth table for system of four NAND gates as shown in figure is : .

    Text Solution

    |

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

    Text Solution

    |

  6. The 1- V characteristic of on LED is

    Text Solution

    |

  7. The forward biased diode connection is

    Text Solution

    |

  8. A single of 5 kHz frequency is amplitude modulated on a carrier wave o...

    Text Solution

    |

  9. In an unbiased p-n junction electrons diffuse from n-region to p-regio...

    Text Solution

    |

  10. A 2V battery is connected across AB as shown in the figure. The value ...

    Text Solution

    |

  11. The value of the resistor, R(S), needed in the dc voltage regulator ci...

    Text Solution

    |

  12. Choose the correct statement.

    Text Solution

    |

  13. For a common emiter configuration if a and beta have their usualy mean...

    Text Solution

    |

  14. if a,b,c,dare inputs to a gate and x is its output , then as per the f...

    Text Solution

    |

  15. The temperature dependence of resistance of Cu and undoped Si in the t...

    Text Solution

    |

  16. Identify the semiconductor devices whose characteristics are given bel...

    Text Solution

    |

  17. An audio signal consists of two distinct sound. One a human speech sig...

    Text Solution

    |

  18. An unknown transistor needs to be identified as npn and pnp type. A mu...

    Text Solution

    |

  19. An experiment is preformed to determine the I-V characteristics of a Z...

    Text Solution

    |

  20. The truth table given in fig. represent : {:(A,B,Y),(0,0,0),(0,1,1),...

    Text Solution

    |