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Antenna current of an AM broadcast trans...

Antenna current of an AM broadcast transmitter modulated by `50%` is `11 A`. The carrier current is

A

9.25 A

B

22 A

C

10.3 A

D

5.5 A

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • When only carrier is sent, antenna current of an AM transmitter is 8A but the current increases to 8.88 A when the carrier is sinusoidally modulated. The percentage of modulation is

    A
    `62%`
    B
    `65%`
    C
    `68%`
    D
    `71%`

  • The antenna current of an AM transmitter is 10 A when only carrier is sent but increase to 10.1 A when the carrier is modulated sinusoidally. The percentage modulation is

    A
    `50%`
    B
    `60%`
    C
    `2%`
    D
    `71%`

  • The antenna current of an AM transmitter is 8 A when only the carrier is sent, but it increases to 8.93 A when the carrier is modulated by a single sine wave. Find the percentage modulation.

    A
    `60.1 %`
    B
    `70.1%`
    C
    `80.1 %`
    D
    `50.1 %`

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    An AM transmitter records an antenna current of 10.5 A . The antenna current drops to 10 A when only carrier is transmitted . What is the percentage modulation ?

    The output current of 90% modulating amplitude modulated generator is 1.8 A. If the generator is additionally modulated by another audio wave of modulation index 0.8then the current rise is ( Take sqrt(1.405) = 1.2 and sqrt(1.725) = 1.31 )

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