MHT CET 2025 23rd April Morning Shift | Semiconductor Devices and Logic Gates Question 5 | Physics

In a common emitter transistor amplifier circuit, the current gain $\alpha=0.8$. If the base current changes by $3 \mu \mathrm{~A}$ then the collector current changes by

$4 \mu \mathrm{~A}$

$12 \mu \mathrm{~A}$

$6 \mu \mathrm{~A}$

$24 \mu \mathrm{~A}$

MHT CET 2025 23rd April Morning Shift

MCQ (Single Correct Answer)

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In the case of common emitter transistor amplifier, the ratio of collector current to emitter current is 0.96 , then the current gain $(\beta)$ of the amplifier is

MHT CET 2025 22nd April Evening Shift

MCQ (Single Correct Answer)

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In the logic circuit given, $\mathrm{A}, \mathrm{B}$ and C are the inputs and Y is the output. The output Y is HIGH

MHT CET 2025 22nd April Evening Shift Physics - Semiconductor Devices and Logic Gates Question 10 English

for all the HIGH inputs.

for all the LOW inputs.

when $\mathrm{A}=1, \mathrm{~B}=0, \mathrm{C}=0$

when $\mathrm{A}=1, \mathrm{~B}=0, \mathrm{C}=1$

MHT CET 2025 22nd April Evening Shift

MCQ (Single Correct Answer)

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The graph given below represents I-V characteristics of zener diode. The part of the characteristics curve that is most relevant for its operation as a voltage regulator is

MHT CET 2025 22nd April Evening Shift Physics - Semiconductor Devices and Logic Gates Question 7 English

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