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Question:

If modulation index is 1/2 and power of carrier wave is 2 W. Then what will be the total power in modulated wave?

0.5 W

0.25 W

2.25 W

1 W

Solution:

The total power in modulated wave is related to the modulation index and power in carrier wave by:
Ptotal = (1 + m²/2)Pcarrier
Substituting the values, we have,
Ptotal = (1 + 0.5²/2) × 2
Ptotal = 2.25 W