1
GATE ECE 2003
MCQ (Single Correct Answer)
+1
-0.3
The depth of penetration of electromagnetic wave in a medium having conductivity $$\sigma $$ at a frequency of 1 KHz is 25 cm. The depth of penetration at a frequency of 4 KHz will be
A
6.25 cm
B
12.50 cm
C
50.00 cm
D
100.00 cm
2
GATE ECE 2001
MCQ (Single Correct Answer)
+1
-0.3
If a plane electromagnetic wave satisfies the equation $${{{\partial ^2}\,{E_x}} \over {\partial \,{z^2}}} = \,{c^2}{{{\partial ^2}\,{E_x}} \over {\partial \,{t^2}}},$$ the wave propagates in the
A
x-direction
B
z-direction
C
y-direction
D
x z plane at an angle of $${{{45}^ \circ }}$$ between the x and z directions
3
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
A TEM wave is incident normally upon a perfect conductor. The E and H fields at the boundary will be respectively
A
minimum and minimum
B
maximum and maximum
C
minimum and maximum
D
maximum and minimum
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The wavelength of a wave with propagation constant $$\left( {0.1\,\pi + j\,0.2\pi } \right){m^{ - 1}}$$ is
A
$${2 \over {\sqrt {0.05} }}\,m$$
B
$$10\,m$$
C
$$20\,m$$
D
$$30\,m$$
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics