1
GATE ECE 2012
MCQ (Single Correct Answer)
+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
2
GATE ECE 2012
MCQ (Single Correct Answer)
+1
-0.3
A plane wave propagating in air with $$\vec E = \left( {8{{\widehat a}_x} + 6{{\widehat a}_y} + 5{{\widehat a}_z}} \right){\mkern 1mu} {\mkern 1mu} {e^{j\left( {\omega t + 3x - 4y} \right)}}{\mkern 1mu} {\mkern 1mu} V/m$$ is incident on a perfectly conducting slab positioned at $$x \le 0$$. The $$\overrightarrow E $$ field of the reflected wave is
3
GATE ECE 2012
MCQ (Single Correct Answer)
+2
-0.6
A transmission line with a characteristic impedance of 100 $$\Omega $$ is used to match a 50 $$\Omega $$ section to a 200 $$\Omega $$ section. If the matching is to be done both at 429 MHz and 1 GHz, the tength of the transmission line can be approximately
4
GATE ECE 2012
MCQ (Single Correct Answer)
+2
-0.6
The magnetic field along the propagation direction inside a rectangular waveguide with the cross section shown in the figure is $${H_Z} = 3\,\,\cos \,\,(2.094\,\, \times \,\,{10^2}x)\,\,\,\cos \,(2.618\,\, \times \,\,{10^2}y)$$
$$\cos \,\,(6.283\,\, \times \,\,{10^{10}}t\, - \beta \,z)$$
The phase velocity $${V_p}$$ of the wave inside the waveguide satisfies
$$\cos \,\,(6.283\,\, \times \,\,{10^{10}}t\, - \beta \,z)$$
The phase velocity $${V_p}$$ of the wave inside the waveguide satisfies
![GATE ECE 2012 Electromagnetics - Waveguides Question 23 English](https://imagex.cdn.examgoal.net/KYM4tDCwtVQNQGoDt/VmSxwYO7mRhadHWhNG8XZNNsxEWax/9qX0juNSm7hfzVQcwlVIAo/uploadfile.jpg)
Paper analysis
Total Questions
Analog Circuits
4
Communications
7
Control Systems
5
Digital Circuits
3
Electromagnetics
8
Electronic Devices and VLSI
5
Engineering Mathematics
10
Network Theory
8
Signals and Systems
4
General Aptitude
10
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