When a transistor is used as an amplifier in | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) For a transistor to operate as an amplifier,it must be in the active region.In the active region,the base-emitter junction must be forward-biased

Vedclass · Accepted Answer

$1, 3$

Vedclass · Answer

(C) For a transistor to operate as an amplifier,it must be in the active region.In the active region,the base-emitter junction must be forward-biased to allow current flow from the emitter to the base.Therefore,statement $(1)$ is correct.To amplify the input signal,the signal is superimposed on the $DC$ biasing voltage applied to the base-emitter junction.Therefore,statement $(3)$ is correct.Statements $(2)$ and $(4)$ are incorrect because the base-collector junction must be reverse-biased in the active region,and the input signal is not applied to the base-collector junction.

Similar Questions

In a silicon transistor,a change of $7.89 \, mA$ in the emitter current produces a change of $7.8 \, mA$ in the collector current. What change in the base current is necessary to produce an equivalent change in the collector current (in $mA$)?

The current amplification factor of a transistor in common emitter configuration is $80$. If the emitter current is $2.43 \text{ mA}$,then the base current is (in $\mu \text{A}$)

In an $n-p-n$ transistor,in $CE$ configuration:

For a common-emitter amplifier, the voltage gain is $40$. Its input and output impedances are $100 \ \Omega$ and $400 \ \Omega$, respectively. The power gain of the $CE$ amplifier will be

When $n-p-n$ transistor is used as an amplifier :

Vedclass Test Series

Exam Paper Generator

Online Exam Module