Question

A machine is capable of a power output of 10 W+/-3 dB. What is the possible power fluctuation?

Answer 1

The possible value of power fluctuation is 3.9811 W

Solution:

As per the question:

Power output, P = 10 W

Power fluctuation is from +3 dB to -3 dB

Therefore,

Power fluctuation in dB = 6 dB

Now,

P (in dB) =
`10log_(10)P'`

6 dB =
`10log_(10)P'`

`0.6 = log_(10)P'`

`P' = 10^(0.6) W = 3.9811 W`