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1
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
Compression in PCM refers to relative compression of
A
higher signal amplitudes
B
lower signal amplitudes
C
lower signal frequencies
D
higher signal frequencies
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
Quadrature multiplexing is
A
the same as FDM
B
the same as TDM
C
a combination of FDM and TDM
D
quite different from FDM and TDM
3
GATE ECE 1997
MCQ (Single Correct Answer)
+1
-0.3
A deterministic signal has the power spectrum given in figure. The minimum sampling rate needed to completely represent this signal is GATE ECE 1997 Communications - Digital Communication Systems Question 66 English
A
1 KHz
B
2 KHz
C
3 KHz
D
None of the above
4
GATE ECE 1997
MCQ (Single Correct Answer)
+1
-0.3
The line code that has zero dc component for pulse transmission of random binary data is
A
Non - return to zero (NRZ)
B
Return to zero(RZ)
C
Alternate Mark Inversion (AMI)
D
None of the above.
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GATE ECE Subjects

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Network Theory
Network Elements Network Theorems Transient Response Sinusoidal Steady State Response Two Port Networks Network Graphs State Equations For Networks Miscellaneous
Control Systems
Time Response Analysis Signal Flow Graph and Block Diagram State Space Analysis Basic of Control Systems Compensators Root Locus Diagram Stability Frequency Response Analysis
Electronic Devices and VLSI
Semiconductor Physics PN Junction BJT and FET IC Basics and MOSFET
Analog Circuits
Diodes Bipolar Junction Transistor Frequency Response FET and MOSFET Oscillators Operational Amplifier Feedback Amplifier Power Amplifier 555 Timer
Digital Circuits
Number System and Code Convertions Boolean Algebra Logic Gates Combinational Circuits Sequential Circuits Semiconductor Memories Logic Families Analog to Digital and Digital to Analog Converters
Microprocessors
Pin Details of 8085 and Interfacing with 8085 Instruction Set and Programming with 8085
Signals and Systems
Representation of Continuous Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Discrete Time Signal Fourier Series Fourier Transform Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Transmission of Signal Through Continuous Time LTI Systems Sampling Transmission of Signal Through Discrete Time Lti Systems Miscellaneous
Communications
Analog Communication Systems Digital Communication Systems Random Signals and Noise Fundamentals of Information Theory Noise In Digital Communication
Electromagnetics
Maxwell Equations Transmission Lines Uniform Plane Waves Waveguides Antennas Miscellaneous
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Verbal Ability Logical Reasoning Numerical Ability
Engineering Mathematics
Linear Algebra Calculus Vector Calculus Probability and Statistics Differential Equations Complex Variable Numerical Methods Transform Theory
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