Question
Transfer characteristics $[$ output voltage $(V_o)$ vs input voltage $(V_i)]$ for a base biased transistor in $CE$ configuration is as shown in the figure. For using transistor as a switch, it is used
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Answer
In the given graph,
Region $(I)$ - Cutoff region
Region $(II)$ - Active region
Region $(III)$ -Saturation region
Using transistor as a switch it is used in cutoff region or saturation region.
Using transistor as a amplifier it is used in active region.
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