Semiconductor Devices

This type asked 12 times: 2 May 2023 S1, 2 May 2023 S2, 9 May 2023 S2, 10 May 2023 S2, 11 May 2023 S1, 12 May 2024 S1, 14 May 2024 S2, 20 Apr 2025 S2, 11 Apr 2026 S1, 16 Apr 2026 S1, 12 May 2026 S2, 13 May 2026 S2. This one: 13 May 2026 S2 See all 12 of this type

149

The following circuit is equivalent to

1. A.
   AND gate
2. B.
   NAND gate
3. C.
   NOR gate
4. D.
   OR gate

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This type asked 7 times: 3 May 2023 S2, 9 May 2023 S1, 10 May 2023 S1, 19 Apr 2025 S2, 15 Apr 2026 S2, 14 May 2026 S2, 19 May 2026 S2. This one: 19 May 2026 S2 See all 7 of this type

150

For the logic circuit given below, for a) input $A = 0$ and input $B = 1$, and b) input $A = 1$ and input $B = 1$, the output $E$ is respectively

1. A.
   zero and one.
2. B.
   one and zero.
3. C.
   zero and zero.
4. D.
   one and one.

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This type asked 7 times: May 2022 S1, 3 May 2023 S1, 10 May 2023 S1, 11 May 2023 S2, 15 May 2023 S2, 21 Apr 2025 S2, 12 May 2026 S2. This one: 12 May 2026 S2 See all 7 of this type

149

The circuit shown contains two ideal diodes $D_1$ and $D_2$. If a cell of e.m.f. $3$V and negligible internal resistance is connected, then the current through $70\,\Omega$ resistance in ampere is

1. A.
   $0.01$
2. B.
   $0.02$
3. C.
   $0.03$
4. D.
   $0$

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This type asked 7 times: 9 May 2024 S2, 11 May 2024 S2, 12 May 2024 S1, 26 Apr 2025 S1, 26 Apr 2025 S2, 15 Apr 2026 S1, 20 Apr 2026 S2. This one: 20 Apr 2026 S2 See all 7 of this type

This type asked 6 times: 2 May 2023 S1, 14 May 2024 S2, 20 Apr 2025 S2, 21 Apr 2025 S1, 18 Apr 2026 S2, 13 May 2026 S2. This one: 13 May 2026 S2 See all 6 of this type

This type asked 6 times: 12 May 2024 S2, 22 Apr 2025 S2, 25 Apr 2025 S1, 25 Apr 2025 S2, 17 Apr 2026 S2, 20 Apr 2026 S1. This one: 20 Apr 2026 S1 See all 6 of this type

148

The output Y of the following digital logic circuit will be '1' (one) for the inputs

1. A.
   $A = 1$ , $B = 0$ , $C = 0$
2. B.
   $A = 1$ , $B = 0$ , $C = 1$
3. C.
   $A = 1$ , $B = 1$ , $C = 0$
4. D.
   $A = 1$ , $B = 1$ , $C = 1$

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This type asked 6 times: 16 May 2023 S2, 11 May 2024 S2, 13 May 2024 S2, 21 Apr 2025 S2, 18 Apr 2026 S2, 19 Apr 2026 S2. This one: 19 Apr 2026 S2 See all 6 of this type

148

The Boolean expression for the given combination of logic gates is

1. A.
   $Y = (A + B) \cdot \bar{C}$
2. B.
   $Y = (A \cdot B) \cdot \bar{C}$
3. C.
   $Y = (A + B) + C$
4. D.
   $Y = (A \cdot B) + \bar{C}$

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This type asked 6 times: May 2021 S1, 15 May 2023 S1, 25 Apr 2025 S1, 26 Apr 2025 S2, 16 Apr 2026 S2, 19 Apr 2026 S1. This one: 19 Apr 2026 S1 See all 6 of this type

This type asked 5 times: 2 May 2023 S2, 4 May 2023 S1, 4 May 2023 S2, 15 May 2026 S2, 19 May 2026 S1. This one: 19 May 2026 S1 See all 5 of this type

148

In the following circuit, the current through the Zener diode is

1. A.
   $5.00$ mA
2. B.
   $6.25$ mA
3. C.
   $11.25$ mA
4. D.
   $16.25$ mA

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This type asked 5 times: 3 May 2023 S2, 11 May 2023 S1, 23 Apr 2025 S1, 19 Apr 2026 S1, 15 May 2026 S2. This one: 15 May 2026 S2 See all 5 of this type