Correct Answer - Option 3 : 6 kV
Concept:
-
Modulation is the process of changing the parameters of the carrier signal, in accordance with the instantaneous values of the modulating signal.
- The message carrying signal has to get transmitted over a distance and for it to establish reliable communication.
- In modulation, we take the help of a high-frequency signal which should not affect the original characteristics of the message signal.
Advantages of Modulation:
- Antenna size gets reduced.
- Communication range increases.
- No signal mixing occurs.
ma = Modulation index
The modulation index is the ratio of the voltage of the message signal to the voltage of the carrier signal.
\({m_a} = \frac{{{V_m}}}{{Vc}}\)
Where
Vm = Peak voltage of message signal
Vc = Voltage of carrier signal
Explanation:
Given
ma = 0.6
Vc = 10 kV
\({m_a} = \frac{{{V_m}}}{{Vc}}\)
Vm = ma Vc
Vm = 0.6 × 10 × 103
Vm = 6 kV