Figure shows the transfer characteristics of a base biased `CE` transistor. Which of the following statements are true ?

(A) At `V_(1) = 0.14 V` transistors is in active state
(B) At `V_(1) = 1V` it can be used as an amplifier
(C) At `V_(1) = 0.5 V`, it can be used as a switch turned off
(D) At `V_(1) = 2.5 V`, it can be used as switch turned on

Options

A. `A,B,C`
B. `B,C,D`
C. `A,C,D`
D. `A,B,D`

Answer

B

Explanation

From the given transfer characteristics of a base biased common emitter transistor, we note that
(ii) When `V_(1) = 1V`( which is in between `0.6 V` to `2. V`), the transistor circuit is in active state and it used as an amplifier.
(iii) When `V_(1) = 0.5 V` there is no collector current, The transistor is in cut-off state. The transistor circuit can be used as a switch turned off
(iv) When `V_(1) = 2.5 V` the collector current becomes maximum and transistor is in saturation and can be used as switch turned on state.