1.

-6dB is equivalent to __________ power gain.(a) 0.5(b) 0.25(c) 0.75(d) 0.8I have been asked this question by my college director while I was bunking the class.My question is taken from General Frequency Consideration in section Transistor Biasing and Low Frequencies of Analog Circuits

Answer»

Correct choice is (b) 0.25

The EXPLANATION is: The RELATION between dB and power gain is

 dB = 10 log(power gain)

 That is power gain for -6DB is

 10(-6 /10) = 0.251.



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