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What happens to the power in a FM signal as the modulation index increases?
  • a)
    decreases
  • b)
    increases
  • c)
    randomly changes
  • d)
    remains constant
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
What happens to the power in a FM signal as the modulation index incre...
As the modulating frequency decreases and the modulating voltage amplitude remains constant, the modulation index increases. This helps in differentiating frequency modulation from phase modulation. The more the amount by which carrier frequency is varied from its unmodulated value, the more is the index of modulation.
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Most Upvoted Answer
What happens to the power in a FM signal as the modulation index incre...
Power remains constant irrespective of the modulation index in case of F.M. signal.
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