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A transmitter radiates 9 kW without modulation and 10.125 kW after modulation. Determine the modulation index.
  • a)
    1
  • b)
    0.7
  • c)
    0.5
  • d)
    0.8
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A transmitter radiates 9 kW without modulation and 10.125 kW after mod...
We have, carrier power, PC = 9kW
Modulated signal power, PT = 10.125kW
For modulation index, 
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Most Upvoted Answer
A transmitter radiates 9 kW without modulation and 10.125 kW after mod...
Given:
Unmodulated power (Pc) = 9 kW
Modulated power (Pm) = 10.125 kW

To find:
Modulation index (m)

Solution:
The modulation index is given by the formula:

m = (Pm – Pc) / Pc

Substituting the given values:

m = (10.125 – 9) / 9
m = 1.125 / 9
m = 0.125

Therefore, the modulation index is 0.125, which is option C.
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A transmitter radiates 9 kW without modulation and 10.125 kW after modulation. Determine the modulation index.a)1b)0.7c)0.5d)0.8Correct answer is option 'C'. Can you explain this answer?
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