In amplitude modulation of waves,the maximum amplitude is $30 \text{ mV}$ and minimum amplitude is $5 \text{ mV}$,then the modulation index is
- A$\frac{4}{7}$
- B$\frac{3}{7}$
- C$\frac{5}{7}$
- D$\frac{2}{7}$
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Similar Questions
Match List $I$ with List $II$ :
List $I$ List $II$ $A$. Attenuation $I$. Combination of a receiver and transmitter. $B$. Transducer $II$. Process of retrieval of information from the carrier wave at receiver. $C$. Demodulation $III$. Converts one form of energy into another. $D$. Repeater $IV$. Loss of strength of a signal while propagating through a medium.
Choose the correct answer from the options given below:
| List $I$ | List $II$ |
| $A$. Attenuation | $I$. Combination of a receiver and transmitter. |
| $B$. Transducer | $II$. Process of retrieval of information from the carrier wave at receiver. |
| $C$. Demodulation | $III$. Converts one form of energy into another. |
| $D$. Repeater | $IV$. Loss of strength of a signal while propagating through a medium. |
Choose the correct answer from the options given below:
$A$ message signal of frequency $10 kHz$ and peak voltage of $15 V$ is used to modulate a carrier frequency of $1 MHz$ and peak voltage of $30 V$. Determine the modulation index.
$A$ speech signal of $3 kHz$ is used to modulate a carrier signal of frequency $1 MHz$,using amplitude modulation. The frequencies of the side bands will be
Modulation is a process of superposing
If the highest modulating frequency of the wave is $5 kHz$,then the number of stations that can be accommodated in a $150 kHz$ bandwidth is
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