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A transmitter supplies `9 kw` to the aerial when unmodulated. The power radiated when modulation index is `60 %`, is

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A transmitter supplies `9 kw` to the aerial when unmodulated. The power radiated when modulation index is `60 %`, is
A. `9.72 kw`
B. `9 kw`
C. `5.4 kw`
D. `10.62 kw`
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Correct Answer - D
`P_(t) = P_(c )(1 +(m^(2))/(2)) = 9 (1 + ((0.6)^(2))/(2)) = 9 [1 + (0.36)/(2)]`
`= 9 [1 + 0.18] = 9 [1.18] = 10.62 kw`
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