i) Input:

• It is plotted by keeping $V_{CE}$ constant.

• As $I_{B}$ increases, $V_{BE}$ increases

-At higher values of $V_{CE}$, this rate of increas reduces.

• The increase of the slope at a point gives dynamic resistance.

(ii) Output:

 

• It is plotte by keeping $I_B$ constant

• Cut-off region: $I_B$ is zero. All …