Which two of the following statements are tru | vedclass

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

Question

(C) In a transistor,the emitter is heavily doped to provide a large number of charge carriers,the collector is moderately doped and larger in size to

Vedclass · Accepted Answer

$(2)$ and $(3)$

Vedclass · Answer

(C) In a transistor,the emitter is heavily doped to provide a large number of charge carriers,the collector is moderately doped and larger in size to dissipate heat,and the base is very thin and lightly doped to allow most charge carriers to pass through to the collector.Statement $(1)$ is false because the regions have different sizes and doping levels.Statement $(2)$ is true because the base is designed to be thin and lightly doped to minimize recombination.Statement $(3)$ is true because,for active operation (amplification),the emitter-base junction must be forward-biased and the base-collector junction must be reverse-biased.Statement $(4)$ is false because this configuration corresponds to the saturation region,not the standard active mode of operation.Therefore,statements $(2)$ and $(3)$ are correct.

Similar Questions

In an $n-p-n$ common emitter $(CE)$ transistor,the collector current changes from $5\,mA$ to $16\,mA$ for a change in base current from $100\,\mu A$ to $200\,\mu A$,respectively. The current gain of the transistor is:

The transfer ratio of a transistor is $50$. The input resistance of the transistor when used in the common-emitter configuration is $1 \; k\Omega$. The peak value of the collector current for an $A.C.$ input voltage of $0.01 \; V$ peak is:

An $n-p-n$ transistor can be considered to be equivalent to two diodes connected back-to-back. Which of the following figures correctly represents this equivalent circuit?

In the $CB$ mode of a transistor, when the collector voltage changes by $0.5 \ V$, the collector current changes by $0.05 \ mA$. What is the output resistance in $k\Omega$?

$A$ transistor is operated in common emitter configuration at $V_C = 2 \, V$ such that a change in the base current from $100 \, \mu A$ to $300 \, \mu A$ produces a change in the collector current from $10 \, mA$ to $20 \, mA$. The current gain is

Vedclass Test Series

Exam Paper Generator

Online Exam Module