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← Bihar Board Class 12 PYQ
Semiconductor Electronics
Bihar Board Class 12 · Physics · 39 past questions
Topic
Logic gates and Boolean algebra
8
Doping and extrinsic semiconductors
7
Transistors
6
p-n junction diode and special diodes
6
Binary number system
5
Semiconductor basics and energy bands
5
Rectifiers
2
Level
Easy
8
Moderate
0
Tough
0
Year
2026
1
2025
2
2024
1
2023
1
2022
1
2021
2
2019
2
2018
0
2017
1
8 of 39 ·
show all
Q1
2026 Set A
2019
Write truth table and Boolean expression of OR and AND get.
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Q9
2025 Set D
Which logic gate's output is true only if the inputs are different?
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Q11
2025 Set D
2019
2017
The Boolean expression for NAND gate is
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Q14
2024 Set A
If in a logic gate output ($Y$) is obtained by the product of its both inputs ($A \cdot B$), then the gate is
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Q25
2023 Set F
Which one of the following logic gates is universal logic gate?
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Q27
2022 Set I
Symbol of NAND gate is
(with a figure)
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Q28
2021 Set A
Boolean expression for NOR gate is
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Q33
2021 Set A
Which of the following is correct for fundamental gate ?
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