1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In the study of transistor as an amplifier if $$\alpha=\frac{I_C}{I_E}=0.98$$ and $$\beta=\frac{I_C}{I_B}=49$$, where $$I_C, I_B$$ and $$\mathrm{I}_{\mathrm{E}}$$ are collector, base and emitter current respectively then $$\left(\frac{1}{\alpha}-\frac{1}{\beta}\right)$$ is equal to

A
zero
B
$$\frac{1}{2}$$
C
2
D
1
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $$p$$-$$n$$ junction diode is in forward bias then

A
width of depletion layer increases
B
electric conduction is not possible at all
C
barrier voltage increases
D
width of depletion layer decreases
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In the digital circuit the inputs are as shown in figure. The Boolean expression for output $$\mathrm{Y}$$ is

MHT CET 2023 11th May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 19 English

A
$$\overline{\mathrm{A}+\mathrm{B}}+\overline{\mathrm{C}}$$
B
$$\overline{\mathrm{A} \cdot \mathrm{B}} \cdot \overline{\mathrm{C}}$$
C
$$\overline{\mathrm{A} \cdot \mathrm{B}}+\overline{\mathrm{C}}$$
D
$$\overline{\mathrm{A}+\mathrm{B}} \cdot \overline{\mathrm{C}}$$
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct circuit diagrams for the normal operation from the following.

MHT CET 2023 11th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 22 English

A
(A), (B)
B
(B), (C)
C
(A), (C)
D
(B), (D)
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