Q3 of 30 Page 98

A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate of – 2dB per km. If the communication channel has a total length of 5 km, the power of the signal received is [gain in ]

Given,

Power when transmitting,


Distance


Attenuation rate,


Now, gain in dB








The only option with this value is (b).

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