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  1. If the carrier of a 100 per cent modulated AM wave is suppressed, the percentage power saving will be—
    1. 50
    2. 150
    3. 100
    4. 66.66
Correct Option: D

Percentage power saving

=
Power saved
× 100
Total power

=
Pc
× 100
Pc + sideband power



=
Pc
= 100
3
× 100 = 66.67
Pc + Pc/2
2


∵ sideband power = μ2
Ac2
=
Pc
42



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