1
GATE ECE 2015 Set 1
Numerical
+1
-0
The electric field component of a plane wave traveling in a lossless dielectric medium is given by $$\overrightarrow E \left( {z,t} \right) = {\widehat a_y}2\cos \left( {{{10}^8}t - {z \over {\sqrt 2 }}} \right)V/m.$$\$

The wavelength )in m) for the wave is

2
GATE ECE 2014 Set 2
+1
-0.3
Which one of the following field patterns represents a TEM wave traveling in the positive $$x$$ direction?
A
$$E = + 8\widehat y,\,\,H = - 4\widehat z$$
B
$$E = - 2\widehat y,\,\,H = - 3\widehat z$$
C
$$E = + 2\widehat y,\,\,H = + 2\widehat z$$
D
$$E = - 3\widehat y,\,\,H = + 4\widehat z$$
3
GATE ECE 2014 Set 1
+1
-0.3
A two - port network has scattering parameters given by $$[S]$$ $$= \left[ {\matrix{ {{s_{11}}} & {{s_{12}}} \cr {{s_{21}}} & {{s_{22}}} \cr } } \right].$$
If the port - 2 of the two - port is short circuited, the $${{s_{11}}}$$ parameter for the resultant one - port network is
A
$${{{s_{11}} - {s_{11}}{s_{22}} + {s_{12}}{s_{21}}} \over {1 + {s_{22}}}}$$
B
$${{{s_{11}} + {s_{11}}{s_{22}} - {s_{12}}{s_{21}}} \over {1 + {s_{22}}}}$$
C
$${{{s_{11}} + {s_{11}}{s_{22}} + {s_{12}}{s_{21}}} \over {1 - {s_{22}}}}$$
D
$${{{s_{11}} - {s_{11}}{s_{22}} + {s_{12}}{s_{21}}} \over {1 - {s_{22}}}}$$
4
GATE ECE 2012
+1
-0.3
The electric field of a uniform plane electromagnetic wave in free spce, along the positive x direction, is given by $$\vec E = 10\left( {{{\widehat a}_y} + j{{\widehat a}_z}} \right){e^{ - j25x}}.$$ The frequency and polarization of the wave respectively are
A
$$1.2 GHz$$ and left circular
B
$$4 Hz$$ and left circular
C
$$1.2 GHz$$ and right circular
D
$$4 Hz$$ and right circular
GATE ECE Subjects
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Communications
Electromagnetics
General Aptitude
Engineering Mathematics
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