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1
GATE ECE 1991
MCQ (More than One Correct Answer)
+2
-0.6
The electric field component of a uniform plane electromagnetic wave propagating in the $$Y$$-direction in a lossless medium will satisfy the equation
A
$${{{\partial ^2}{E_y}} \over {\partial \,{y^2}}} = \mu \in {{{\partial ^2}{E_y}} \over {\partial \,{t^2}}}$$
B
$${{{\partial ^2}{E_y}} \over {\partial \,{x^2}}} = \mu \in {{{\partial ^2}{E_y}} \over {\partial \,{t^2}}}$$
C
$${{{\partial ^2}{E_x}} \over {\partial \,{y^2}}} = \mu \in {{{\partial ^2}{E_x}} \over {\partial \,{t^2}}}$$
D
$${{\sqrt {E_x^2 + E_z^2} } \over {\sqrt {H_x^2 + H_z^2} }} = \sqrt {\mu / \in } $$
2
GATE ECE 1989
MCQ (Single Correct Answer)
+2
-0.6
The skin - depth of copper at a frequency of $$3 GHz$$ is $$1$$ micron ($${{{10}^{ - 6}}}$$ metre). At $$12 GHz$$, for a non - magnetic conductor whose conductivity is $$1/9$$ times that of copper, the skin $$-$$ depth would be
A
$$\sqrt {9 \times 4} $$ microns
B
$$\sqrt {9/4} \,\,$$ microns
C
$$\sqrt {4/9} \,\,$$ microns
D
$${1 \over {\sqrt {9 \times 4} }}\,$$ microns
3
GATE ECE 1988
MCQ (Single Correct Answer)
+2
-0.6
In a good conductor the phase relation between the tangential components of electric field Et and the magnetic field Ht is as follows
A
Et and Ht are in phase
B
Et and Ht are out of phase
C
Ht leads Et by 900
D
Et leads Ht by 450
4
GATE ECE 1987
MCQ (Single Correct Answer)
+2
-0.6
For an electromagnetic wave incident from one medium to a second medium, total reflection takes place when
A
The angle of incidence is equal to the Brewster angle with E field perpendicular to the plane of incidence.
B
The angle of incidence is equal to the Brewster angle with E field parallel to the plane of incidence.
C
The angle of incidence is equal to the critical angle with the wave moving from the denser medium to a rarer medium.
D
The angle of incidence is equal to the critical angle with the wave moving from a rarer medium to a denser medium.
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GATE ECE Subjects
Network Theory
State Equations For Networks Network Elements Network Theorems Two Port Networks Transient Response Sinusoidal Steady State Response Network Graphs Miscellaneous
Control Systems
Basic of Control Systems Signal Flow Graph and Block Diagram Time Response Analysis Stability Root Locus Diagram Frequency Response Analysis Compensators State Space Analysis
Electronic Devices and VLSI
Semiconductor Physics PN Junction BJT and FET IC Basics and MOSFET
Analog Circuits
Bipolar Junction Transistor FET and MOSFET Oscillators Operational Amplifier 555 Timer Frequency Response Diodes Feedback Amplifier Power Amplifier
Digital Circuits
Logic Gates Boolean Algebra Analog to Digital and Digital to Analog Converters Sequential Circuits Combinational Circuits Logic Families Number System and Code Convertions Semiconductor Memories
Microprocessors
Instruction Set and Programming with 8085 Pin Details of 8085 and Interfacing with 8085
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
Analog Communication Systems Digital Communication Systems Random Signals and Noise Fundamentals of Information Theory Noise In Digital Communication
Electromagnetics
Waveguides Antennas Miscellaneous Transmission Lines Maxwell Equations Uniform Plane Waves
General Aptitude
Numerical Ability Logical Reasoning Verbal Ability
Engineering Mathematics
Linear Algebra Calculus Vector Calculus Complex Variable Probability and Statistics Differential Equations Numerical Methods Transform Theory
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