1
GATE ECE 1993
Numerical
+2
-0
A superheterodyne radio receiver with an intermediate frequency of 455 KHz is
tuned to a station operating at 1200 KHz. The associated image frequency is
______ KHz.
Your input ____
2
GATE ECE 1993
MCQ (Single Correct Answer)
+2
-0.6
Which of the following demodulator(s) can be used for demodulating the signal
$$x(t)\;=\;5\left(1+2\;\cos200\mathrm{πt}\right)\cos\;20000\;\mathrm{πt}$$ .
3
GATE ECE 1992
MCQ (Single Correct Answer)
+2
-0.6
The maximum power efficiency of an AM modulator is
GATE ECE Subjects
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Control Systems
Engineering Mathematics
Analog Circuits
Network Theory
Electromagnetics
Electronic Devices and VLSI
Digital Circuits
Microprocessors
Signals and Systems
Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Representation of Continuous Time Signal Fourier Series Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Continuous Time Linear Invariant System Discrete Time Signal Z Transform Sampling
Communications
General Aptitude