MHT CET 2025 22nd April Morning Shift | Semiconductor Devices and Logic Gates Question 12 | Physics

If a centre tap transformer is used with two p-n junction diodes for full wave rectification then output voltage of rectifier with respect to each diode is (secondary voltage of transformer $=\mathrm{V}_{\mathrm{s}}$ )

$2 \mathrm{~V}_{\mathrm{s}}$

$\left(\frac{2}{3}\right) \mathrm{V}_{\text {s }}$

$\left(\frac{1}{2}\right) \mathrm{V}_{\mathrm{s}}$

$\left(\frac{3}{2}\right) \mathrm{V}_{\mathrm{s}}$

MHT CET 2025 22nd April Morning Shift

MCQ (Single Correct Answer)

-0

If an alternating voltage is applied across a p-n junction diode in series with a load then

no voltage appears across load.

a pulsating voltage appears across load.

an a.c. voltage appears across load.

a d.c. voltage appears across load which is not pulsating.

MHT CET 2025 21st April Evening Shift

MCQ (Single Correct Answer)

-0

In the following combination of logic gates, the output $Y$ can be written in the terms of inputs $A$ and B as

MHT CET 2025 21st April Evening Shift Physics - Semiconductor Devices and Logic Gates Question 14 English

$(\mathrm{A} \cdot \overline{\mathrm{B}})+(\overline{\mathrm{A}} \cdot \mathrm{B})$

$(\mathrm{A} \cdot \mathrm{B})+(\overline{\mathrm{A}} \cdot \mathrm{B})$

$(\overline{\mathrm{A} \cdot \mathrm{B}})+(\overline{\mathrm{A}} \cdot \mathrm{B})$

$(\overline{\mathrm{A} \cdot \mathrm{B}})+(\mathrm{A} \cdot \overline{\mathrm{B}})$

MHT CET 2025 21st April Evening Shift

MCQ (Single Correct Answer)

-0

In common emitter mode of a transistor, the current gain is 8 . The input impedance is $25 \mathrm{k} \Omega$ and load resistance is $75 \mathrm{k} \Omega$. The power gain is

192

112

316

224

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