Semiconductor Electronics
Previous year questions with solutions · 2025 – 2026
33 Questions
31 Papers covered
4.42% ↑10.5% Weightage in 2026
Year-wise statistics questions · papers · average per paper · weightage Year Questions Papers Avg / paper Weightage 2026 21 19 1.1 4.42% ↑10.5% 2025 12 12 1 4.00%
All 33 MCQ 31 Numerical 2
TopicAll Diode as a Rectifier (Half-wave and Full-wave) Intrinsic and Extrinsic Semiconductors Logic Gates (OR, AND, NOT, NAND, NOR) Semiconductor Diode: Forward and Reverse Bias, V–I Characteristics Special Purpose Diodes: Zener Diode, LED, Photodiode, Solar Cell p–n Junction Formation YearAll 2026 2025
1
The output Y for the given inputs A and B to the circuit is : [figure]
[figure] [figure] [figure] [figure]
JEE Main 2026 (Online) 8th April Evening Shift
2
Refer to the logic circuit given below. For two inputs (A=1, B=1) and (A=0, B=1), output (Y) will be . [figure]
1, 0 respectively 0, 1 respectively 0, 0 respectively 1, 1 respectively
JEE Main 2026 (Online) 6th April Evening Shift
3
For the given logic circuit, which of the following inputs combination will make both LED-1 and LED-2 to glow? [figure]
A = 0, B = 1, C = 1 A = 1, B = 0, C = 0 A = 1, B = 0, C = 1 A = 1, B = 1, C = 0
JEE Main 2026 (Online) 5th April Morning Shift
4
Two 4 bits binary numbers, A = 1101 and B = 1010 are given in the inputs of a logic circuit shown in figure below. The output (Y) will be : [figure]
Y = 1101 Y = 0010 Y = 0111 Y = 1000
JEE Main 2026 (Online) 4th April Morning Shift
5
If X and Y are the inputs, the given circuit works as . [figure]
OR gate AND gate NAND gate NOR gate
JEE Main 2026 (Online) 2nd April Evening Shift
6
Two p-n junction diodes D1 and D2 are connected as shown in figure. A and B are input signals and C is the output. The given circuit will function as a . [figure]
AND Gate OR Gate NOR Gate NAND Gate
JEE Main 2026 (Online) 28th January Evening Shift
7
Identify the correct truth table of the given logic circuit. [figure]
arrayccc A & B & Y \ 0 & 0 & 0 \ 0 & 1 & 0 \ 1 & 0 & 1 \ 1 & 1 & 0 array arrayccc A & B & Y \ 0 & 0 & 0 \ 0 & 1 & 1 \ 1 & 0 & 1 \ 1 & 1 & 0 array arrayccc A & B & Y \ 0 & 0 & 1 \ 0 & 1 & 1 \ 1 & 0 & 1 \ 1 & 1 & 0 array arrayccc A & B & Y \ 0 & 0 & 1 \ 0 & 1 & 0 \ 1 & 0 & 1 \ 1 & 1 & 0 array
JEE Main 2026 (Online) 24th January Evening Shift
8
For the given logic gate circuit, which of the following is the correct truth table? [figure]
arrayccc n & m & z \ 0 & 0 & 1 \ 0 & 1 & 1 \ 1 & 1 & 0 \ 1 & 0 & 0 array arrayccc n & m & z \ 0 & 0 & 1 \ 0 & 1 & 0 \ 1 & 1 & 1 \ 1 & 0 & 0 array arrayccc n & m & z \ 0 & 0 & 0 \ 0 & 1 & 1 \ 1 & 1 & 0 \ 1 & 0 & 1 array arrayccc n & m & z \ 0 & 0 & 1 \ 0 & 1 & 0 \ 1 & 1 & 0 \ 1 & 0 & 0 array
JEE Main 2026 (Online) 23rd January Evening Shift
9
Find the correct combination of A, B, C and D inputs which can cause the LED to glow. [figure]
1000 0011 0100 1101
JEE Main 2026 (Online) 22nd January Morning Shift
10
The correct truth table for the given input data of the following logic gate is : [figure]
[figure] [figure] [figure] [figure]
JEE Main 2026 (Online) 22nd January Evening Shift
11
The given circuit works as : [figure]
NOR gate OR gate AND gate NAND gate
JEE Main 2026 (Online) 21st January Morning Shift
12
Consider the following logic circuit. [figure] The output is Y = 0 when :
A = 1 and B = 0 A = 0 and B = 0 A = 1 and B = 1 A = 0 and B = 1
JEE Main 2025 (Online) 7th April Evening Shift
13
The Boolean expression Y = A BC + A C can be realised with which of the following gate configurations. Choose the correct answer from the options given below:
B, C Only A, B, C Only A, B Only A, C Only
JEE Main 2025 (Online) 4th April Morning Shift
14
Choose the correct logic circuit for the given truth table having inputs A and B. [figure]
[figure] [figure] [figure] [figure]
JEE Main 2025 (Online) 3rd April Morning Shift
15
The truth table corresponding to the circuit given below is: [figure]
arrayccc A & B & C \ 0 & 0 & 0 \ 0 & 1 & 0 \ 1 & 0 & 1 \ 1 & 1 & 1 array arrayccc A & B & C \ 0 & 0 & 1 \ 1 & 0 & 0 \ 0 & 1 & 0 \ 1 & 1 & 0 array arrayccc A & B & C \ 0 & 0 & 1 \ 0 & 1 & 0 \ 1 & 0 & 0 \ 1 & 1 & 0 array arrayccc A & B & C \ 0 & 0 & 0 \ 1 & 0 & 0 \ 0 & 1 & 0 \ 1 & 1 & 1 array
JEE Main 2025 (Online) 3rd April Evening Shift
16
In the digital circuit shown in the figure, for the given inputs the P and Q values are : [figure]
P = 0, Q = 1 P = 1, Q = 0 P = 0, Q = 0 P = 1, Q = 1
JEE Main 2025 (Online) 2nd April Evening Shift
17
[figure] For the circuit shown above, equivalent GATE is :
NOT gate NAND gate AND gate OR gate
JEE Main 2025 (Online) 29th January Morning Shift
18
Which of the following circuits has the same output as that of the given circuit? [figure]
[figure] [figure] [figure] [figure]
JEE Main 2025 (Online) 28th January Morning Shift