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Q1:

Consider the following BJT circuit:
hie = 2 k ohm
hfe = 100
hre = 2.5 x 10-4

The value of Ri is :

A 2.46 kΩ

B 2.88 kΩ

C 200 Ω

D 18.48 Ω

ANS:A - 2.46 kΩ

Ri = 7 || 4.3 || (2 + (1 + 100)330) = 2.88 kΩ.



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