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Q.

A 600 W carrier is modulated to a depth of 75 % by a 400 Hz sine wave. The total antenna power is

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a

769 W

b

796 W

c

679 W

d

976 W

answer is A.

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Detailed Solution

Given :  Pc = 600 W   and μ = 0.75 Pt=Pc1+μ22 =6001+(0.75)22 = 768.5 ≃769 W
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