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

Which of 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 the following four statements are correct?

In which of the following salt bridge is not needed ?

In amplitude modulation, sinusoidal carrier frequency used is denoted by omega_(c) and the signal frequency is denoted by omega_(m) . The bandwidth (Deltaomega_(m)) of the signal is such that Deltaomega_(m)ltltomega_(c) . Which of the following frequency is not contained in the modulated wave.

Which of the following arrangements shows the correct order of electron affinity of the four halogen atoms I,Cl,Br,F?

Which of the following represents the correct sets of the four quantum numbers of a 4d electron

Which of the following needs a proof ?

Which of the following represent(s) the correct set of four quantum numbers of a 5d electron ?

Which of the following is/are the limitations of amplitude modulation?

Which of the following modulation index produces noise?

Which one of the following statements is correct about all the four of jellyfish , starfish ,platypus and pigeon ?

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 following four alternatives is not correct? We need modulatio...

    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 I - V characteristic of an LED is

    Text Solution

    |

  7. The forward biased diode connection among the following is

    Text Solution

    |

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

    Text Solution

    |

  9. In an unbiased p-n junction, holes diffuse from the P-region to n-regi...

    Text Solution

    |

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

    Text Solution

    |

  11. The value of the resistor , Rs needed in the DC voltage regulator circ...

    Text Solution

    |

  12. Choose the correct statement

    Text Solution

    |

  13. For a common emitter configuration, if alpha and beta have their usual...

    Text Solution

    |

  14. If a, b, c, d are inputs to a gate and x is its output, then, as per t...

    Text Solution

    |

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

    Text Solution

    |

  16. I-V characteristics of four devices are shown in figure Ident...

    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 following truth table corresponds to the logic gate

    Text Solution

    |