GATE ECE Question Paper 2026 with Solutions OUT - Check Electronics and Communication Engineering Paper

GATE 2026 Electronics and Communication Engineering Question Paper Overview

In the official notification released by IIT Guwahati, the format of GATE ECE 2026 is as follows:

GATE 2026 Electronics and Communication Engineering Memory-Based Questions

The GATE 2026 Exams are over. IIT Guwahati will release the GATE 2026 question paper along with its answer key on the official website. Students can also download the GATE 2026 ECE question paper with solutions PDF from the table mentioned below. Until then, students can review the memory-based question, provided below, to evaluate their performance.

Question 1: In the given circuit, all resistors are $1 \mathrm{k} \Omega$. A 1 mA current source is connected between the top and bottom nodes. A 6 V source connects the midpoints of the two vertical branches as shown. Find the output voltage $V_0$.

Question 2: In the given op-amp circuit, the non-inverting terminal is grounded. The input voltage is 2 V applied through $1 \mathrm{k} \Omega$. The feedback resistor is $1 \mathrm{k} \Omega$. The output is connected to a $2 \mathrm{k} \Omega$ load to ground and also through a $\mathbf{2} \mathbf{k} \Omega$ resistor to the op-amp output. Find the output voltage $V_0$ and currents $I_1, I_0$, and $I_x$.

Question 3: Find the area of the square shown in the figure whose vertices are at $(0,0),(1,1),(2,0)$ and $(1,-1)$.

Question 4: If $y(n)=\frac{5}{6} y(n-1)-\frac{1}{6}(4-n)+x(n)$. Determine whether the system is linear and time-invariant (LTI).

Question 5: mod-64 ripple counter can be designed using
(A) 4
(B) 5
(C) 6
(D) 7

Question 6: A JK flip-flop has inputs $J=1$ and $K=1$. The clock input is applied as shown. Find the output clock cycles per second (output frequency).

Question 7: Find $P_1+P_2+\cdots+P_{10}$ if $P_k$ is the perimeter of a square having side length $k$.

Question 8: Consider the following circuit. If $A B=2.5, B C=1, C D=D E=2$ and $E F=F C=3$, then the ratio of area of land ( $L$ ) and to water ( $W$ ) is $\_\_\_\_$ .

(A) 0.75
(B) 0.25
(C) 0.45
(D) 1.00

Question 9: Find the remaining part of the given diagram:

Question 10: Consider the op-amp shown in figure below: If $V_0$ is ' $x$ ' when switch is open after closed the switch, the output $V_0$ is

(A) $x$
(B) $\frac{3 x}{4}$
(C) $\frac{x}{2}$
(D) $2 x$

Question 11: For transistor shown below, if $\beta$ is 99 , then the value of $I_0$ is

(A) $3 \mu A$
(B) 30 mA
(C) $3 m A$
(D) $30 \mu A$

Question 12: Consider the op-amp shown below: For $V_{\text {in }}=2 \mathrm{~V}$, the current $I_x$ is

(A) $3 m A$
(B) 1 mA
(C) 2 mA
(D) $4 m A$

Question 13: Find maximum $V_0$.

(A) 4 V
(B) 3 V
(C) 2 V
(D) 1 V

Question 14: If $\frac{E_b}{N_0}=8.4 \mathrm{~dB}$, find probability of error for QPSK modulation.
(A) $10^{-4}$
(B) $10^{-6}$
(C) $10^{-2}$
(D) $10^{-3}$

Question 15: Find the channel capacity of a system using Shannon Hartley Law of a signal whose bandwidth is $\mathbf{1 ~ M H z}$, signal power is $\mathbf{- 8 0 ~ d B m}, k T=-174 \mathbf{~ d B m} / \mathbf{H z}$.
(A) $C=B$
(B) $C=2 B$
(C) $C>3 B$
(D) $C<B$

Question 16: Given, (7,4, 1) Hamming code and BER = 0.1 Prove that decoder will fail to decode rec codeword properly will be?

Question 17: If the starting address of a 256 KB memory is 2500 H , then find the address of the final location.

Question 18: Find the 10 's complement of $(47)_{10}$.

Question 19: Consider the closed loop system shown below, Find 'K' for marginal stability.

Question 20: Find the logic function performed by the below circuit:

Question 21: What is the dominant transport mechanism for current flow in zener breakdown?
(A) Drift
(B) Diffusion
(C) Ballistic transport
(D) Tunnelling

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