1
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
A modulated signal is given by s(t)= $${e^{ - at}}$$ cos $$\left[ {({\omega _c} + \Delta \omega )t} \right]$$ u (t), where a, $${\omega _c}$$ and $${\Delta \omega }$$ are positive constants, and $${\omega _c}$$ >>$${\Delta \omega }$$. The complex envelope of s(t) is given by
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The Fourier transform of a function x(t) is X(f). The Fourier transform of $${{dx(t)} \over {dt}}$$ will be
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The Fourier transform of a voltage of a voltage signal x(t) is X(f). The unit of |X(f)| is
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The amplitude spectrum of a Gaussian pulse is
Questions Asked from Fourier Transform (Marks 1)
Number in Brackets after Paper Indicates No. of Questions
GATE ECE Subjects
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Representation of Continuous Time Signal Fourier Series Discrete Time Signal Fourier Series Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Transmission of Signal Through Continuous Time LTI Systems Discrete Time Linear Time Invariant Systems Sampling Continuous Time Signal Laplace Transform Discrete Fourier Transform and Fast Fourier Transform Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Fourier Transform
Communications
Electromagnetics
General Aptitude