Home
Class 12
PHYSICS
C(t) and m(t) are used to generate an AM...

`C(t)` and `m(t)` are used to generate an `AM` signal. The modulation indes of generated `AM` signal is `0.5`. Then the quantity `(P_("Total "SB))/(P_("Carrier"))=`

A

`1//8`

B

`1//4`

C

`2//3`

D

`9//8`

Text Solution

Verified by Experts

The correct Answer is:
A
`(P_(Total SB))/(P_(Carrier))=(P_(c)(m^(2)/2))/(P_(c))=(1)/(8)`
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    NARAYNA|Exercise Level-III|11 Videos

  • COMMUNICATION SYSTEM

    NARAYNA|Exercise NCERT Based|16 Videos

  • COMMUNICATION SYSTEM

    NARAYNA|Exercise Level-I(C.W)|16 Videos

  • CAPACITANCE

    NARAYNA|Exercise Previous IIT-JEE|16 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 6|43 Videos

Similar Questions

Explore conceptually related problems

If V_(c) is amplitude of carrier wave in AM transmitter where modulation factor is m then amplitude of side bands can be

What is the modulation index if an audio signal of amplitude one half of the carrier amplitude is used in AM?

" The total power content of an AM signal is "3000" w.For "100%" modulation,the power of CW and that of each side band are "

The audio signal used to modulate 60 sin (2pixx10^(6)t) is 15 sin 300 pi t . The depth of modulation is

A signal Acosomegat is transmitted using v_(0) sinomega_(0)t modulated (AM) signal is:

Let m(t)=cos(4pixx10^(3)t) and C(t)=5cos(2pixx10^(6)t) are the message and carrier signals modulation index is 0.5 . What is the efficency achieved?

In an amplitude modulator circuit the carrier wave is given by C(t) = 4 sin(2 pi × 10^7 t) while modulating signal is given by m(t) = 2 sin(2 pi × 10^5 t) . Then the bandwidth of the broadcast signal will be

If A_m and A_c are the amplitudes of modulating signal and carrier wave respectively, then modulation index is given by

An audio signal of amplitude 0.1 V is used is used in amplitude modulation of a carrier wave of amplitude 0.2 V. Calculate the modulation index.

If a carrier wave c(t)=A sin omega_(c)t is amplitude modulated by a modulator signal m(t)=A sin omega_(m)t then the equation of modulated signal [C_(m)(t)] and its modulation index are respectively

NARAYNA-COMMUNICATION SYSTEM-Level-II(C.W)
  1. Depth of modulation in terms of E(max) and E(min) is

    Text Solution

    |

  2. If V(c) is amplitude of carrier wave in AM transmitter where modulatio...

    Text Solution

    |

  3. If a carrier wave of amplitude 10mV is modulated by an audio signal of...

    Text Solution

    |

  4. The amplitude modulated current is given by i=125[1+0.6sin2900t]sin1...

    Text Solution

    |

  5. If minimum voltage in an AM wave was found to be 2V and maximum voltag...

    Text Solution

    |

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

    Text Solution

    |

  7. A transmitter supplies 9kW to the aerial when unmodulated. The power r...

    Text Solution

    |

  8. The total power content of an AM wave is 1500 W. For 100% modulation, ...

    Text Solution

    |

  9. The bit rate for a signal, which has a sampling rate of 8 kHz and whar...

    Text Solution

    |

  10. The antenna current of an AM transmitter is 8A when only the carrier i...

    Text Solution

    |

  11. In a diode AM- dectector, the output circuit consist of R=1 kW and C=1...

    Text Solution

    |

  12. In an FM system a 7 kHz signal modulates 108 MHz carrier so that frequ...

    Text Solution

    |

  13. Maximum usable frequency (MUF) in F-region layer is x, when the critic...

    Text Solution

    |

  14. Suppose that the modulating signal is m(t)=2cos(2pif(m)t) and the carr...

    Text Solution

    |

  15. C(t) and m(t) are used to generate an AM signal. The modulation indes ...

    Text Solution

    |

  16. Which of one of the following modulated signals are recovered up to a ...

    Text Solution

    |

  17. A message signal m(t)=4cos2000pit modulates the carrier C(t)=cos2pif(c...

    Text Solution

    |

  18. A 1 MHz carrier signal is modulated by a symmertrical sinusoidal wave ...

    Text Solution

    |

  19. A given AM transmitter develops an unmodulated power out put of 1 KW a...

    Text Solution

    |

  20. Let m(t)=cos(4pixx10^(3)t) and C(t)=5cos(2pixx10^(6)t) are the message...

    Text Solution

    |