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Communications
Analog Communication Systems
Marks 1Marks 2
Digital Communication Systems
Marks 1Marks 2Marks 8Marks 10
Random Signals and Noise
Marks 1Marks 2Marks 4
Fundamentals of Information Theory
Marks 1Marks 2
Noise In Digital Communication
Marks 1Marks 2
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1
GATE ECE 1989
MCQ (Single Correct Answer)
+2
-0.6
Zero mean Gaussian noise of variance N is applied to a half wave rectifier. The mean squared value of the rectifier output will be:
A
Zero
B
N/2
C
$$N/\sqrt 2 $$
D
N
2
GATE ECE 1987
MCQ (Single Correct Answer)
+2
-0.6
The variance of a random variable X is $$\sigma _x^2\,.$$ Then the variance of - kx (where k is a positive constant ) is
A
$$\sigma _x^2\,$$
B
- k $$\sigma _x^2\,$$
C
k $$\sigma _x^2\,$$
D
$${k^2}\,\sigma _x^2\,$$
3
GATE ECE 1987
MCQ (Single Correct Answer)
+2
-0.6
White Gaussian noise is passed through a linear narrow band filter. The probability density function of the envelope of the noise at the filter output is:
A
Uniform
B
Poisson
C
Gaussian
D
Rayleigh
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Questions Asked from Marks 2
GATE ECE 2025 (1) GATE ECE 2024 (2) GATE ECE 2023 (2) GATE ECE 2022 (1) GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 2 (2) GATE ECE 2016 Set 1 (1) GATE ECE 2016 Set 3 (1) GATE ECE 2015 Set 2 (3) GATE ECE 2015 Set 3 (1) GATE ECE 2014 Set 3 (3) GATE ECE 2014 Set 2 (1) GATE ECE 2014 Set 1 (2) GATE ECE 2013 (2) GATE ECE 2011 (1) GATE ECE 2010 (1) GATE ECE 2008 (1) GATE ECE 2006 (3) GATE ECE 2005 (2) GATE ECE 2004 (1) GATE ECE 2002 (1) GATE ECE 1992 (1) GATE ECE 1991 (1) GATE ECE 1989 (2) GATE ECE 1987 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics