Chemical Engineering - Process Control and Instrumentation - Discussion

3. 

An amplitude ratio of 0.1 corresponds to __________ decibels.

[A]. 20
[B]. -20
[C]. 10
[D]. -10

Answer: Option B

Explanation:

No answer description available for this question.

Mitul said: (Nov 23, 2013)  
DB = 20 LOG AR.
= 20 LOG 0.1.
= -20.

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