Find the frequency at which the signal enhancement flattens out in pre – McqOptions

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1.	Find the frequency at which the signal enhancement flattens out in preemphasis circuit if R1=50 ,R2=70 and C=0.45 F.
A.	12126.09Hz
B.	550Hz
C.	10036..52Hz
D.	9004.56Hz
Answer» B. 550Hz

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