1
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The polarization of a wave with electric field vector $$\overrightarrow E = {E_0}\,{e^{j\left( {\omega t - \beta z} \right)}}\left( {\overrightarrow {{a_x}} + \overrightarrow {{a_y}} } \right)$$ is
A
linear
B
elliptical
C
left hand circular
D
right hand circular
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The depth of penetration of a wave in a lossy dielectric increases with increasing
A
conductivity
B
permeability
C
wavelength
D
permittivity
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
A loop is rotating about the y-axis in a magnetic field $$$\overrightarrow B\;=\;B_0\cos\left(\mathrm{ωt}\;+\;\mathrm\phi\;\right)\;{\overrightarrow a}_x\;\mathrm T .$$$ The voltage in the loop is
A
zero
B
due to rotation only
C
due to transformer action only
D
due to both rotation and transformer action
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The Maxwell's equation $$\nabla\times\overrightarrow H\;=\;\overrightarrow J\;+\;\frac{\partial\overrightarrow D}{\partial t}$$ is based on
A
Ampere’s law
B
Gauss’ law
C
Faraday’s law
D
Coulomb’s law