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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
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 
  • A
    in region $III$
  • ✓
    both in region $I \& III$
  • C
    in region $II$
  • D
    in region $I$
✓

Answer

Correct option: B.
both in region $I \& III$
b
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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