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Transformers

Q1:

A transformer turns ratio of ________ will be needed to match an output impedance of 5 komega.gif to an 8 omega.gif speaker.

A 5:1

B 8:1

C 25:1

D 625:1

ANS:C - 25:1

(n2/n1) ^2 = r2/r1.

n2/n1= (5000/8) ^0. 5.

n2/n1= 25.

Hence 25:1.



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