An npn BJT has gm=38mA/v, cμ =10<sup>¯14</sup> F, cπ =10<sup>¯13</sup>F and DC current gain β0=90. For this transistor fT & fβ are

T

Team MCQ Buddy • 10.52K Points
Tutor II

Q. An npn BJT has gm=38mA/v, cμ =10^¯14 F, cπ =10^¯13F and DC current gain β0=90. For this transistor fT & fβ are

(A) fT =1.64 x 10⁸ Hz & fβ = 1.47 x 10¹⁰ Hz.

(B) fT =1.47 x 10¹⁰ Hz & fβ = 1.64 x 10⁸ Hz

(C) fT =1.33 x 10¹² Hz & fβ = 1.47 x 10¹⁰ Hz

(D) fT =1.47 x 10¹⁰ Hz & fβ = 1.33 x 10¹² Hz

Correct : Option (B)

Share

Discusssion

Login to discuss.

Loading Comments....

Related MCQs

Q. Three identical amplifiers with each one having a voltage gain of 50, input resistance of 1KΩ & output resistance of 250 ,are cascade D. The open cir

Q. All good conductors have high

Q. A cumulatively compounded long shunt generator when operating as a motor would be

Q. In DC chopper, the waveform for input and output voltages is respectively __________

Q. In a control system the output of the controller is given to

Q. In a stable control system backlash can cause which of the following ?

Q. The transformation technique in which there is one to one mapping from s-domain to z-domain is

Q. Which of the following is not a general characteristic of ac wave?

Q. PD controller:

Q. The cascade amplifier is a multistage configuration of