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1
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
If S represents the carrier synchronization at the receiver and $$\rho $$ represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is
A
$$\rho = 0.5,\,S$$ is required
B
$$\rho = 1.0,\,S$$ is required
C
$$\rho = 0.5,\,S$$ is not required
D
$$\rho = 1.0,\,S $$ is not required
2
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
A signal is sampled at 8 KHz and is quantized using 8-bit uniform quantizer. Assuming $$SN{R_q}$$ for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is
A
R = 32 kbps, $$SN{R_q}$$ = 25.8 dB
B
R = 64 kbps, $$SN{R_q}$$ = 49.8 dB
C
R = 64 kbps, $$SN{R_q}$$ = 55.8 dB
D
R = 32 kbps, $$SN{R_q}$$ = 49.8 dB
3
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
The input to a linear delta modulator having a step size $$\Delta $$ = 0.628 is a sine wave with frequency fm and peak amplitude Em. If the sampling frequency fs = 40 KHz. the combination of the sine-wave frequency and the amplitude, where slope overload will take place is
A
Em 0.3V, Fm 8 KHz
B
Em 1.5V, Fm 4 KHz
C
Em 1.5V, Fm 2 KHz
D
Em 3.0V, Fm 1 KHz
4
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
In a digital communication system employing Frequency Shift Keying (FSK), the 0 and 1 bit are represented by sine waves of 10 KHz and 25 KHz respectively. These waveforms will be orthogonal for a bit interval of
A
$$45\,\,\mu \sec $$
B
$$200\,\,\mu \sec $$
C
$$50\,\,\mu \sec $$
D
$$250\,\,\mu \sec $$
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General Aptitude
Verbal Ability Logical Reasoning Numerical Ability
Network Theory
Network Elements State Equations For Networks Network Graphs Miscellaneous Sinusoidal Steady State Response Network Theorems Two Port Networks Transient Response
Microprocessors
Pin Details of 8085 and Interfacing with 8085 Instruction Set and Programming with 8085
Signals and Systems
Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Representation of Continuous Time Signal Fourier Series Transmission of Signal Through Continuous Time LTI Systems Miscellaneous Sampling Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Discrete Time Signal Z Transform Transmission of Signal Through Discrete Time Lti Systems
Electromagnetics
Waveguides Miscellaneous Antennas Transmission Lines Uniform Plane Waves Maxwell Equations
Digital Circuits
Sequential Circuits Number System and Code Convertions Logic Gates Combinational Circuits Semiconductor Memories Logic Families Analog to Digital and Digital to Analog Converters Boolean Algebra
Electronic Devices and VLSI
PN Junction Semiconductor Physics IC Basics and MOSFET BJT and FET
Control Systems
Stability Frequency Response Analysis Compensators State Space Analysis Root Locus Diagram Signal Flow Graph and Block Diagram Time Response Analysis Basic of Control Systems
Communications
Fundamentals of Information Theory Noise In Digital Communication Digital Communication Systems Random Signals and Noise Analog Communication Systems
Engineering Mathematics
Probability and Statistics Linear Algebra Complex Variable Transform Theory Vector Calculus Differential Equations Calculus Numerical Methods
Analog Circuits
Oscillators Operational Amplifier 555 Timer Diodes FET and MOSFET Power Amplifier Frequency Response Bipolar Junction Transistor Feedback Amplifier
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