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When the carrier is unmodulated, a certain transmitter radiates 9 kW when the carrier is sinusoidally modulated the transmitter radiates 10.125 kW. The modulation index will be
  • a)
    0.1
  • b)
    10.15
  • c)
    0.4
  • d)
    0.5
Correct answer is option 'D'. Can you explain this answer?
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When the carrier is unmodulated, a certain transmitter radiates 9 kW w...
Given:
Unmodulated carrier power, Pc = 9 kW
Modulated carrier power, Pm = 10.125 kW
We need to find the modulation index.

Formula used:
Modulation index (m) = (Pm - Pc) / Pc

Calculation:
Substituting the given values in the formula, we get
m = (10.125 - 9) / 9
m = 1.125 / 9
m = 0.125

Therefore, the modulation index is 0.125 or 0.5 (in percentage).

Answer: Option D (0.5)
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When the carrier is unmodulated, a certain transmitter radiates 9 kW when the carrier is sinusoidally modulated the transmitter radiates 10.125 kW. The modulation index will bea)0.1b)10.15c)0.4d)0.5Correct answer is option 'D'. Can you explain this answer?
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