1
GATE ECE 2016 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Let the electric field vector of a plane electromagnetic wave propagating in a homogenous medium be expressed as $$E = \widehat x{E_x}\,{e^{ - j\left( {wt - \beta z} \right)}},$$ , where the propagation constant $$\beta $$ is a function of the angular frequency $$\omega $$. Assume that $$\beta \left( \omega \right)$$ and $${E_x}$$ are known and are real. From the information available, which one of the following CANNOT be determined?
A
The type of polarization of the wave.
B
The group velocity of the wave.
C
The phase velocity of the wave.
D
The power flux through the z = 0 plane.
2
GATE ECE 2016 Set 3
MCQ (Single Correct Answer)
+1
-0.3
If a right-handed circularly polarized wave is incident normally on a plane perfect conductor, then the reflected wave will be
A
right-handed circularly polarized
B
left-handed circularly polarized
C
elliptically polarized with a tilt angle of 450
D
horizontally polarized
3
GATE ECE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
The electric field of a uniform plane electromagnetic wave is $$$\vec E = \left( {{{\overrightarrow a }_x} + j4{{\overrightarrow a }_y}} \right)\exp \left[ {j\left( {2\pi \times {{10}^7}t - 0.2z} \right)} \right]$$$

The polarization of the wave is

A
right handed circular
B
right handed elliptical
C
left handed circular
D
left handed elliptical
4
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

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