If a CE amplifier has a value of IE = 3 mA, the ac emitter ...

[mwit1967]

If a CE amplifier has a value of IE = 3 mA, the ac emitter resistance of its transistor is
 
  A) 3  B) 75  C) 25  D) 8.3

Question 2

A CE equivalent amplifier circuit shows an R1 of 16 k and an R2 of 5.6 k in parallel from the transistor's base to ground. The transistor's ac beta (hfe) is 220 and its ac emitter resistance (re) is 30 . The transistor's input impedance is
 
  A) 7.3 k B) 16 k C) 2.55 k D) 5.6 k

[mrphibs]

Answer to Question 1

D

Answer to Question 2

C

[mwit1967]

Thank you!

[mrphibs]

Always glad to help...