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Most answered questions in Electromagnetics
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1
GATE ECE 2018 | Question: 48
The cutoff frequency of $TE_{01}$ mode of an air filled rectangular waveguide having inner dimensions $a\:\text{cm} \: \times \: b\: \text{cm}\:\left ( a> b \right )$ is twice that of the dominant $TE_{10}$ mode. When the waveguide is operated ... the guide wavelength is found to be $4\:\text{cm}$. The value of $b$ (in cm, correct to two decimal places) is ________.
The cutoff frequency of $TE_{01}$ mode of an air filled rectangular waveguide having inner dimensions $a\:\text{cm} \: \times \: b\: \text{cm}\:\left ( a b \right )$ is t...
gatecse
1.6k
points
191
views
gatecse
asked
Feb 19, 2018
Electromagnetics
gate2018-ec
numerical-answers
electromagnetics
waveguides
+
–
0
votes
0
answers
2
GATE ECE 2024 | Question: 5
Consider a lossless transmission line terminated with a short circuit as shown in the figure below. As one moves towards the generator from the load, the normalized impedances $z_{\text {inA }}, z_{i n B}, z_{i n C}$, and $z_{i n D}$ ... $z_{i n A}=+0.4 j \Omega, z_{i n B}=\infty, z_{i n C}=-0.4 j \Omega, z_{i n D}=0$
Consider a lossless transmission line terminated with a short circuit as shown in the figure below. As one moves towards the generator from the load, the norm...
admin
46.4k
points
461
views
admin
asked
Feb 16
Transmission lines
gateece-2024
transmission-lines
waveguides
+
–
0
votes
0
answers
3
GATE ECE 2024 | Question: 29
A uniform plane wave with electric field $\vec{E}(x)=A_{y} \hat{a}_{y} e^{-j \frac{2 \pi x}{3}} \mathrm{~V} / \mathrm{m}$ is travelling in the air (relative permittivity, $\epsilon_{r}=1$ and relative permeability, $\mu_{r}=1$ ) in the $+x$ direction ( $A_{y}$ is a ... air (measured from $x=0$, in metres) is $\_\_\_\_\_\_\_$. $-\frac{3}{4}$ $-\frac{3}{2}$ $-6$ $-3$
A uniform plane wave with electric field $\vec{E}(x)=A_{y} \hat{a}_{y} e^{-j \frac{2 \pi x}{3}} \mathrm{~V} / \mathrm{m}$ is travelling in the air (relative permittivity,...
admin
46.4k
points
194
views
admin
asked
Feb 16
Electromagnetics
gateece-2024
electromagnetics
plane-waves-and-properties
+
–
0
votes
0
answers
4
GATE ECE 2020 | Question: 13
The impedances $Z=jX,$ for all $X$ in the range $\left ( -\infty ,\infty \right )$, map to the Smith chart as a circle of radius $1$ with centre at $(0, 0)$. a point at the centre of the chart. a line passing through the centre of the chart. a circle of radius $0.5$ with centre at $(0.5, 0)$.
The impedances $Z=jX,$ for all $X$ in the range $\left ( -\infty ,\infty \right )$, map to the Smith chart asa circle of radius $1$ with centre at $(0, 0)$.a point at the...
go_editor
1.9k
points
169
views
go_editor
asked
Feb 13, 2020
Electromagnetics
gate2020-ec
impedance
electromagnetics
+
–
0
votes
0
answers
5
GATE ECE 2020 | Question: 21
A transmission line of length $3\lambda /4$ and having a characteristic impedance of $50$ $\Omega$ is terminated with a load of $400 \Omega$. The impedance (rounded off to two decimal places) seen at the input end of the transmission line is __________ $\Omega$.
A transmission line of length $3\lambda /4$ and having a characteristic impedance of $50$ $\Omega$ is terminated with a load of $400 \Omega$. The impedance (rounded off t...
go_editor
1.9k
points
172
views
go_editor
asked
Feb 13, 2020
Electromagnetics
gate2020-ec
numerical-answers
impedance
electromagnetics
+
–
0
votes
0
answers
6
GATE ECE 2020 | Question: 43
For an infinitesimally small dipole in free space, the electric field $E_{\theta }$ in the far field is proportional to $e^{-jkr/r}\sin\theta$, where $k=2\pi /\lambda$. A vertical infinitesimally small electric dipole $\left (\delta l \ll \lambda \right )$ ... field radiation pattern occurs at $\theta =60^{\circ}$, is $\lambda$ $0.5\lambda$ $0.25\lambda$ $0.75\lambda$
For an infinitesimally small dipole in free space, the electric field $E_{\theta }$ in the far field is proportional to $e^{-jkr/r}\sin\theta$, where $k=2\pi /\lambda$. A...
go_editor
1.9k
points
229
views
go_editor
asked
Feb 13, 2020
Electromagnetics
gate2020-ec
electromagnetics
radiation-pattern
+
–
0
votes
0
answers
7
GATE ECE 2020 | Question: 45
The magnetic field of a uniform plane wave in vacuum is given by $\overrightarrow{H}\left ( x,y,z,t \right )=(\hat{a_{x}}+2\hat{a_{y}}+b\hat{a_{z}})\cos\left ( \omega t+3x-y-z\right ).$ The value of $b$ is ___________.
The magnetic field of a uniform plane wave in vacuum is given by $$\overrightarrow{H}\left ( x,y,z,t \right )=(\hat{a_{x}}+2\hat{a_{y}}+b\hat{a_{z}})\cos\left ( \omega t+...
go_editor
1.9k
points
112
views
go_editor
asked
Feb 13, 2020
Electromagnetics
gate2020-ec
numerical-answers
plane-waves-and-properties
electromagnetics
+
–
0
votes
0
answers
8
GATE ECE 2020 | Question: 46
For a $2$-port network consisting of an ideal lossless transformer, the parameter $S_{21}$ (rounded off to two decimal places) for a reference impedance of $10 \Omega$, is __________.
For a $2$-port network consisting of an ideal lossless transformer, the parameter $S_{21}$ (rounded off to two decimal places) for a reference impedance of $10 \Omega$, i...
go_editor
1.9k
points
155
views
go_editor
asked
Feb 13, 2020
Electromagnetics
gate2020-ec
numerical-answers
impedance
electromagnetics
+
–
0
votes
0
answers
9
GATE ECE 2019 | Question: 12
In the table shown, List I and List II, respectively, contain terms appearing on the left-hand side and the right-hand side of Maxwell's equations (in their standard form). Match the left-hand side with the corresponding right-hand side. ... $1-Q,2-R,3-P,4-S$ $1-Q,2-S,3-P,4-R$ $1-R,2-Q,3-S,4-P$
In the table shown, List I and List II, respectively, contain terms appearing on the left-hand side and the right-hand side of Maxwell’s equations (in their standard fo...
Arjun
6.6k
points
175
views
Arjun
asked
Feb 12, 2019
Electromagnetics
gate2019-ec
electromagnetics
maxwell's-equations
+
–
0
votes
0
answers
10
GATE ECE 2019 | Question: 23
Radiation resistance of a small dipole current element of length $l$ at a frequency of $3$ GHz is $3$ ohms. If the length is changed by $1\%$, then the percentage change in the radiation resistance, rounded off to two decimal places, is ________ $\%.$
Radiation resistance of a small dipole current element of length $l$ at a frequency of $3$ GHz is $3$ ohms. If the length is changed by $1\%$, then the percentage change ...
Arjun
6.6k
points
181
views
Arjun
asked
Feb 12, 2019
Electromagnetics
gate2019-ec
numerical-answers
electromagnetics
radiation-pattern
+
–
0
votes
0
answers
11
GATE ECE 2019 | Question: 24
In the circuit shown, $V_{s}$ is square wave of period $T$ with maximum and minimum values of $8\: V$ and $-10\: V$, respectively. Assume that the diode is ideal and $R_{1}=R_{2}=50\: \Omega.$ The average value of $V_{L}$ is _______ volts (rounded off to $1$ decimal place).
In the circuit shown, $V_{s}$ is square wave of period $T$ with maximum and minimum values of $8\: V$ and $-10\: V$, respectively. Assume that the diode is ideal and $R_{...
Arjun
6.6k
points
232
views
Arjun
asked
Feb 12, 2019
Electromagnetics
gate2019-ec
numerical-answers
electromagnetics
wave-equation
+
–
0
votes
0
answers
12
GATE ECE 2019 | Question: 37
The dispersion equation of a waveguide, which relates the wavenumber $k$ to the frequency $\omega$ is $k(\omega)= (1/c) \sqrt{\omega^{2}-\omega_{\circ}^{2}}$ where the speed of light $c= 2 \times 10^{8}\: m/s$ and $\omega_{\circ}$ ... $2 \times 10^{8}\: m/s$ $3 \times 10^{8}\: m/s$ $4.5 \times 10^{8}\: m/s$
The dispersion equation of a waveguide, which relates the wavenumber $k$ to the frequency $\omega$ is$$k(\omega)= (1/c) \sqrt{\omega^{2}-\omega_{\circ}^{2}}$$where the sp...
Arjun
6.6k
points
167
views
Arjun
asked
Feb 12, 2019
Electromagnetics
gate2019-ec
electromagnetics
waveguides
+
–
0
votes
0
answers
13
GATE ECE 2019 | Question: 48
A Germanium sample of dimensions $1\: cm \times 1\: cm$ is illuminated with a $20\:mW,$ $600\: nm$ laser light source as shown in the figure. The illuminated sample surface has a $100\: nm$ of loss-less Silicon dioxide layer that reflects one-fourth ... bandgap is $0.66\: eV,$ the thickness of the Germanium layer, rounded off to $3$ decimal places, is ________ $\mu m.$
A Germanium sample of dimensions $1\: cm \times 1\: cm$ is illuminated with a $20\:mW,$ $600\: nm$ laser light source as shown in the figure. The illuminated sample surfa...
Arjun
6.6k
points
201
views
Arjun
asked
Feb 12, 2019
Electromagnetics
gate2019-ec
numerical-answers
electromagnetics
+
–
0
votes
0
answers
14
GATE ECE 2019 | Question: 51
A rectangular waveguide of width $w$ and height $h$ has cut-off frequencies for $TE_{10}$ and $TE_{11}$ modes in the ration $1:2$ . The aspect ratio $w/h$, rounded off to two decimal places , is _______.
A rectangular waveguide of width $w$ and height $h$ has cut-off frequencies for $TE_{10}$ and $TE_{11}$ modes in the ration $1:2$ . The aspect ratio $w/h$, rounded off to...
Arjun
6.6k
points
182
views
Arjun
asked
Feb 12, 2019
Electromagnetics
gate2019-ec
numerical-answers
electromagnetics
waveguides
+
–
0
votes
0
answers
15
GATE ECE 2016 Set 3 | Question: 24
If a right-handed circularly polarized wave is incident normally on a plane perfect conductor, then the reflected wave will be right-handed circularly polarized left-handed circularly polarized elliptically polarized with a tilt angle of $45^ \circ$ horizontally polarized
If a right-handed circularly polarized wave is incident normally on a plane perfect conductor, then the reflected wave will beright-handed circularly polarizedleft-handed...
Milicevic3306
16.0k
points
171
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-3
electromagnetics
polarization
+
–
0
votes
0
answers
16
GATE ECE 2016 Set 3 | Question: 25
Faraday's law of electromagnetic induction is mathematically described by which one of the following equations? $\nabla\ \bullet \overrightarrow{B} = 0$ $\nabla\ \bullet \overrightarrow{D} = \rho_V$ ...
Faraday’s law of electromagnetic induction is mathematically described by which one of the following equations?$\nabla\ \bullet \overrightarrow{B} = 0$$\nabla\ \bulle...
Milicevic3306
16.0k
points
139
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-3
electromagnetics
+
–
0
votes
0
answers
17
GATE ECE 2016 Set 3 | Question: 52
Consider an air-filled rectangular waveguide with dimensions $a=2.286\:cm$ and $b=1.016\:cm$. At $10 \:GHz$ operating frequency, the value of the propagation constant (per meter) of the corresponding propagation mode is _______
Consider an air-filled rectangular waveguide with dimensions $a=2.286\:cm$ and $b=1.016\:cm$. At $10 \:GHz$ operating frequency, the value of the propagation constant (pe...
Milicevic3306
16.0k
points
100
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-3
numerical-answers
electromagnetics
waveguides
+
–
0
votes
0
answers
18
GATE ECE 2016 Set 3 | Question: 53
Consider an air-filled rectangular waveguide with dimensions $a=2.286\:cm$ and $b=1.016\:cm$. The increasing order of the cut-off frequencies for different modes is $TE_{01}<TE_{10}<TE_{11}<TE_{20}$ $TE_{20}<TE_{11}<TE_{10}<TE_{01}$ $TE_{10}<TE_{20}<TE_{01}<TE_{11}$ $TE_{10}<TE_{11}<TE_{20}<TE_{01}$
Consider an air-filled rectangular waveguide with dimensions $a=2.286\:cm$ and $b=1.016\:cm$. The increasing order of the cut-off frequencies for different modes is $TE_{...
Milicevic3306
16.0k
points
64
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-3
electromagnetics
waveguides
+
–
0
votes
0
answers
19
GATE ECE 2016 Set 3 | Question: 54
A radar operating at $5\:GHz$ uses a common antenna for transmission and reception. The antenna has a gain of $150$ and is aligned for maximum directional radiation and reception to a target $1\:km$ away having radar cross-section of $3\:m^2$. If it transmits $100\:kW$, then the received power (in $\mu W)$ is _______
A radar operating at $5\:GHz$ uses a common antenna for transmission and reception. The antenna has a gain of $150$ and is aligned for maximum directional radiation and r...
Milicevic3306
16.0k
points
84
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-3
numerical-answers
electromagnetics
antennas
+
–
0
votes
0
answers
20
GATE ECE 2016 Set 3 | Question: 55
Consider the charge profile shown in the figure. The resultant potential distribution is best described by
Consider the charge profile shown in the figure. The resultant potential distribution is best described by
Milicevic3306
16.0k
points
146
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-3
electromagnetics
+
–
0
votes
0
answers
21
GATE ECE 2016 Set 2 | Question: 23
A uniform and constant magnetic field $\textbf{B}=\hat{z}B$ exists in the $\hat{z}$ direction in vacuum. A particle of mass $m$ with a small charge $q$ ... . Circular motion in the $xy$ plane. Linear motion in the $\hat{z}$ direction. Linear motion in the $\hat{x}$ direction.
A uniform and constant magnetic field $\textbf{B}=\hat{z}B$ exists in the $\hat{z}$ direction in vacuum. A particle of mass $m$ with a small charge $q$ is introduced into...
Milicevic3306
16.0k
points
134
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-2
electromagnetics
+
–
0
votes
0
answers
22
GATE ECE 2016 Set 2 | Question: 24
Let the electric field vector of a plane electromagnetic wave propagating in a homogeneous medium be expressed as $\textbf{E}=\hat{x}E_{x}e^{-j(\omega t-\beta z)},$ where the propogation constant $\beta$ ... of the wave. The group velocity of the wave. The phase velocity of the wave. The power flux through the $z=0$ plane.
Let the electric field vector of a plane electromagnetic wave propagating in a homogeneous medium be expressed as $\textbf{E}=\hat{x}E_{x}e^{-j(\omega t-\beta z)},$ where...
Milicevic3306
16.0k
points
138
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-2
electromagnetics
+
–
0
votes
0
answers
23
GATE ECE 2016 Set 2 | Question: 25
Light from free space is incident at an angle $\theta _{i}$ to the normal of the facet of a step-index large core optical fibre. The core and cladding refractive indices are $n _{1}=1.5$ and $n _{2}=1.4$, respectively. The maximum value of $\theta _{i}$ (in degrees) for which the incident light will be guided in the core of the fibre is _________
Light from free space is incident at an angle $\theta _{i}$ to the normal of the facet of a step-index large core optical fibre. The core and cladding refractive indices ...
Milicevic3306
16.0k
points
189
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-2
numerical-answers
electromagnetics
optical-fiber
+
–
0
votes
0
answers
24
GATE ECE 2016 Set 2 | Question: 53
A lossless microstrip transmission line consists of a trace of width $w$. It is drawn over a pratically infinite ground plane and is separated by a dielectric slab of thickness $t$ and relative permittivity $\varepsilon _{r}> 1.$ The inductance per unit length and the ... $Z_{0}< \sqrt{\frac{Lt}{\varepsilon _{0}\varepsilon _{\gamma}t}}$
A lossless microstrip transmission line consists of a trace of width $w$. It is drawn over a pratically infinite ground plane and is separated by a dielectric slab of thi...
Milicevic3306
16.0k
points
157
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-2
electromagnetics
+
–
0
votes
0
answers
25
GATE ECE 2016 Set 2 | Question: 54
A microwave circuit consisting of lossless transmission lines $T_{1}$ and $T_{2}$ is shown in the figure. The plot shows the magnitude of the input reflection coefficient $\Gamma$ as a function of frequency $f$. The phase velocity of the signal in the transmission lines is $2\times 10^{8}$ $m/s$. The length $L$ (in meters) of $T_{2}$ is _________
A microwave circuit consisting of lossless transmission lines $T_{1}$ and $T_{2}$ is shown in the figure. The plot shows the magnitude of the input reflection coefficient...
Milicevic3306
16.0k
points
138
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-2
numerical-answers
electromagnetics
transmission-lines
+
–
0
votes
0
answers
26
GATE ECE 2016 Set 1 | Question: 25
The propagation constant of a lossy transmission line is $(2+j5) m^{-1}$ and its characteristic impedance is $(50+j0) \Omega$ at $\omega = 10^6 rad \: s^{-1}$ ... $L = 250 \: \mu H/m, C = 0.2 \: \mu F/m, R=50 \: \Omega /m, \: G=0.04 \: S/m$
The propagation constant of a lossy transmission line is $(2+j5) m^{-1}$ and its characteristic impedance is $(50+j0) \Omega$ at $\omega = 10^6 rad \: s^{-1}$. The values...
Milicevic3306
16.0k
points
197
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-1
impedance
electromagnetics
+
–
0
votes
0
answers
27
GATE ECE 2016 Set 1 | Question: 52
An antenna pointing in a certain direction has a noise temperature of $50 \: K$. The ambient temperature is $290 \: K$. The antenna is connected to a pre-amplifier that has a noise figure of $2$ dB and an available gain of $40$ dB over an effective bandwidth of $12$ MHz. ... $T_e = 160.62\thinspace K$ and $P_{a0} = 4.6\times 10^{-10}W$
An antenna pointing in a certain direction has a noise temperature of $50 \: K$. The ambient temperature is $290 \: K$. The antenna is connected to a pre-amplifier that h...
Milicevic3306
16.0k
points
104
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-1
electromagnetics
antennas
+
–
0
votes
0
answers
28
GATE ECE 2016 Set 1 | Question: 53
Two lossless X-band horn antennas are separated by a distance of $200 \lambda$. The amplitude reflection coefficients at the terminals of the transmitting and receiving antennas are $0.15$ and $0.18$,respectively. The maximum directives of ... are perfectly aligned and polarization matched, the power ( in mW) delivered to the load at the receiver is _________
Two lossless X-band horn antennas are separated by a distance of $200 \lambda$. The amplitude reflection coefficients at the terminals of the transmitting and receiving a...
Milicevic3306
16.0k
points
141
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-1
numerical-answers
electromagnetics
antennas
+
–
0
votes
0
answers
29
GATE ECE 2016 Set 1 | Question: 54
The electric field of a uniform plane wave traveling along the negative $z$ direction is given by the following equation: ${\overrightarrow {E}^i_w= ( \hat {a}_x+ j\hat {a}_y)E_0e^{jkz}}$ This wave is incident upon a receiving antenna placed ... $-5$dB Circular(clockwise), Linear, $-3$dB Circular(anti clockwise), Linear, $-3$dB
The electric field of a uniform plane wave traveling along the negative $z$ direction is given by the following equation:$${\overrightarrow {E}^i_w= ( \hat {a}_x+ j\hat {...
Milicevic3306
16.0k
points
117
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-1
plane-waves-and-properties
electromagnetics
+
–
0
votes
0
answers
30
GATE ECE 2016 Set 1 | Question: 55
The far-zone power density radiated by a helical antenna is approximated as: ${\overrightarrow W_{rad}= \overrightarrow W_{average} \approx \hat {a_r}C_0\frac{1}{r^2}\cos^4\theta}$ The radiated power density is symmetrical with respect to $\phi$ ... maximum directivity of the antenna, respectively, are $1.5C_0,10dB$ $1.256C_0,10dB$ $1.256C_0,12dB$ $1.5C_0,12dB$
The far-zone power density radiated by a helical antenna is approximated as:$${\overrightarrow W_{rad}= \overrightarrow W_{average} \approx \hat {a_r}C_0\frac{1}{r^2}\cos...
Milicevic3306
16.0k
points
105
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2016-ec-1
electromagnetics
antennas
+
–
0
votes
0
answers
31
GATE ECE 2015 Set 3 | Question: 24
The directivity of an antenna array can be increased by adding more antenna elements, as a larger number of elements improves the radiation efficiency increases the effective area of the antenna results in a better impedance matching allows more power to be transmitted by the antenna
The directivity of an antenna array can be increased by adding more antenna elements, as a larger number of elements improves the radiation efficiency increases the effec...
Milicevic3306
16.0k
points
106
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2015-ec-3
electromagnetics
antennas
+
–
0
votes
0
answers
32
GATE ECE 2015 Set 3 | Question: 25
A coaxial cable is made of two brass conductors. The spacing between the conductors is filled with Teflon $(\varepsilon_{r} = 2.1, \tan \delta = 0).$ Which one of the following circuits can represent the lumped element model of a small piece of this cable having length $\Delta z$?
A coaxial cable is made of two brass conductors. The spacing between the conductors is filled with Teflon $(\varepsilon_{r} = 2.1, \tan \delta = 0).$ Which one of the fol...
Milicevic3306
16.0k
points
92
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2015-ec-3
electromagnetics
+
–
0
votes
0
answers
33
GATE ECE 2015 Set 3 | Question: 53
Consider the $3\:m$ long lossless air-filled transmission line shown in the figure. It has a characteristic impedance of $120\pi\: \Omega,$ is terminated by a short circuit, and is excited with a frequency of $37.5\: MHz.$ What is the nature of the input impedance $(Z_{in})?$ Open Short Inductive Capacitive
Consider the $3\:m$ long lossless air-filled transmission line shown in the figure. It has a characteristic impedance of $120\pi\: \Omega,$ is terminated by a short circu...
Milicevic3306
16.0k
points
111
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2015-ec-3
electromagnetics
impedance
+
–
0
votes
0
answers
34
GATE ECE 2015 Set 2 | Question: 24
In a source free region in vacuum, if the electrostatic potential $\varphi = 2x^{2} + y^{2} + cz^{2},$ the value of constant ܿ$c$ must be _______.
In a source free region in vacuum, if the electrostatic potential $\varphi = 2x^{2} + y^{2} + cz^{2},$ the value of constant ܿ$c$ must be _______.
Milicevic3306
16.0k
points
136
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2015-ec-2
numerical-answers
electromagnetics
+
–
0
votes
0
answers
35
GATE ECE 2015 Set 2 | Question: 25
The electric field of a uniform plane electromagnetic wave is $\overrightarrow{E} = \left(\overrightarrow{a}_{x} + j 4 \overrightarrow{a}_{y}\right) \text{exp }[j(2\pi \times 10^{7}t – 0.2z)].$ The polarization of the wave is right handed circular right handed elliptical left handed circular left handed elliptical
The electric field of a uniform plane electromagnetic wave is$$\overrightarrow{E} = \left(\overrightarrow{a}_{x} + j 4 \overrightarrow{a}_{y}\right) \text{exp }[j(2\pi \t...
Milicevic3306
16.0k
points
82
views
Milicevic3306
asked
Mar 27, 2018
Electromagnetics
gate2015-ec-2
electromagnetics
+
–
0
votes
0
answers
36
GATE ECE 2015 Set 2 | Question: 53
An air-filled rectangular waveguide of internal dimensions $a\: cm \times b\: cm\:(a>b)$ has a cutoff frequency of $6\:GHz$ for the dominant $TE_{10}$ mode. For the same waveguide, if the cutoff frequency of the $TM_{11}$mode is $15\: GHz,$ the cutoff frequency of the $TE_{01}$ mode in $GHz$ is __________.
An air-filled rectangular waveguide of internal dimensions $a\: cm \times b\: cm\:(a>b)$ has a cutoff frequency of $6\:GHz$ for the dominant $TE_{10}$ mode. For the same...
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Electromagnetics
gate2015-ec-2
numerical-answers
electromagnetics
waveguides
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0
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37
GATE ECE 2015 Set 2 | Question: 55
The electric field of a plane wave propagating in a lossless non-magnetic medium is given by the following expression ... The type of the polarization is Right Hand Circular Left Hand Elliptical Right Hand Elliptical Linear
The electric field of a plane wave propagating in a lossless non-magnetic medium is given by the following expression $$\text{E}(z,t) = \textbf{a}_{x} 5 \cos(2\pi \times ...
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Electromagnetics
gate2015-ec-2
electromagnetics
propagation
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0
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38
GATE ECE 2015 Set 1 | Question: 21
The polar plot of the transfer function $G(s) = \frac{10(s+1)}{s+10}$ for $0 \leq \omega < \infty$ will be in the first quadrant second quadrant third quadrant fourth quadrant
The polar plot of the transfer function $G(s) = \frac{10(s+1)}{s+10}$ for $0 \leq \omega < \infty$ will be in thefirst quadrantsecond quadrantthird quadrantfourth quadran...
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Electromagnetics
gate2015-ec-1
electromagnetics
polarization
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0
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39
GATE ECE 2015 Set 1 | Question: 25
The electric field component of a plane wave traveling in a lossless dielectric medium is given by $\overrightarrow{E}(z,t) = \hat{a}_y 2 \cos \bigg( 10^st-\frac{z}{\sqrt{2}} \bigg) \: V/m$. The wavelength (in m) for the wave is ___________.
The electric field component of a plane wave traveling in a lossless dielectric medium is given by $\overrightarrow{E}(z,t) = \hat{a}_y 2 \cos \bigg( 10^st-\frac{z}{\sqr...
Milicevic3306
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Electromagnetics
gate2015-ec-1
numerical-answers
plane-waves-and-properties
electromagnetics
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0
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40
GATE ECE 2015 Set 1 | Question: 37
All the logic gates shown in the figure have a propagation delay of $20$ ns. Let $A=C=0$ and $B=1$ until time $t=0$. At $t=0$, all the inputs flip (i.e., $A=C=1$ and $B=0$) and remain in that state. For $t>0$, output $Z=1$ for a duration (in ns) of ________.
All the logic gates shown in the figure have a propagation delay of $20$ ns. Let $A=C=0$ and $B=1$ until time $t=0$. At $t=0$, all the inputs flip (i.e., $A=C=1$ and $B=0...
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Electromagnetics
gate2015-ec-1
numerical-answers
electromagnetics
propagation
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