GO Electrical
Ask us anything
Toggle navigation
GO Electrical
Email or Username
Password
Remember
Login
Register

I forgot my password
Activity
Questions
Hot!
Unanswered
Tags
Subjects
Users
Ask
New Blog
Blogs
Exams
Questions without an upvoted answer in new
No answer
No selected answer
No upvoted answer
Featured
Previous GATE
No answer
No selected answer
No upvoted answer
Featured
Previous GATE
0
votes
0
answers
1
GATE2020EE1
$ax^{3}+bx^{2}+cx+d$ is a polynomial on real $\text{x}$ over real coefficients $\text{a, b, c, d}$ wherein $a\neq 0.$ Which of the following statements is true? $\text{d}$ can be chosen to ensure that $\text{x = 0}$ is a root for any given set ... identical. $\text{a, b, c, d}$ can be chosen to ensure that all roots are complex. $\text{c}$ alone cannot ensure that all roots are real.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
2
GATE2020EE2
Which of the following is true for all possible nonzero choices of integers $m,n;m\neq n,$ or all possible nonzero choices of real numbers $p,q;p\neq q,$ as applicable? $\frac{1}{\pi }\int_{0}^{\pi }\sin m\theta \:\sin n\theta d\theta =0$ ... $\lim_{\alpha \rightarrow \infty }\frac{1}{2\alpha }\int_{\alpha }^{\alpha }\sin p\theta \:\sin q\theta d\theta =0$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
3
GATE2020EE3
Which of the following statements is true about the two sided Laplace transform? It exists for every signal that may or may not have a Fourier transform. It has no poles for any bounded signal that is nonzero only inside a finite time interval. The ... If a signal can be expressed as a weighted sum of shifted one sided exponentials, then its Laplace Transform will have no poles.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
4
GATE2020EE4
Consider a signal $x\left [ n \right ]=\left ( \frac{1}{2} \right )^{n}1\left [ n \right ],$ where $1\left [ n \right ]=0$ if $n< 0$, and $1\left [ n \right ]= 1$ if $n \geq 0.$ ... $\left  z \right > 2$ $\left  z \right < \frac{1}{2}$ $\left  z \right > \frac{1}{2}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
5
GATE2020EE5
The value of the following complex integral, with $\text{C}$ representing the unit circle centered at origin in the counterclockwise sense, is: $\int _{C}\frac{z^{2}+1}{z^{2}2z}\:dz$ $8\pi i$ $8\pi i$ $\pi i$ $\pi i$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
6
GATE2020EE6
$x_{R}$ and $x_{A}$ are, respectively, the rms and average values of $x\left ( t \right )=x\left ( tT \right ),$ and similarly, $y_{R}$ and $y_{A}$ are, respectively, the rms and average values of $y\left ( t \right )=kx\left ( t \right ).\:k,T$ are independent of $\text{t}$. ... $y_{A}\neq kx_{A} ;\:y_{R}= kx_{R}$ $y_{A}\neq kx_{A} ;\:y_{R}\neq kx_{R}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
7
GATE2020EE7
A threephase cylindrical rotor synchronous generator has a synchronous reactance $X_{s}$ and a negligible armature resistance. The magnitude of per phase terminal voltage is $V_{A}$ and the magnitude of per phase induced emf is $E_{A}$ ... $\text{P is false and Q is false}$. $\text{P is true and Q is true}$.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
8
GATE2020EE8
A lossless transmission line with $0.2$ $\text{pu}$ reactance per phase uniformly distributed along the length of the line, connecting a generator bus to a load bus, is protected up to $80$% of its length by a distance relay placed at the generator bus. The generator terminal ... a solid three phaseto ground fault on the transmission line is closest to: $1.00$ $3.61$ $5.00$ $6.25$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
9
GATE2020EE9
Out of the following options, the most relevant information needed to specify the real power $\text{(P)}$ at the $\text{PV}$ buses in a load flow analysis is solution of economic load dispatch rated power output of the generator rated voltage of the generator base power of the generator
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
10
GATE2020EE10
Consider a linear timeinvariant system whose input $\text{r(t)}$ and output $\text{y(t)}$ are related by the following differential equation: $\frac{d^{2}y\left ( t \right )}{dt^{2}}+4y\left ( t \right )=6r\left ( t \right )$ The poles of this system are at $+2j,2j$ $+2,2$ $+4,4$ $+4j,4j$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
11
GATE2020EE11
A singlephase, fullbridge diode rectifier fed from a $230$ $\text{V}$, $50$ $\text{Hz}$ sinusoidal source supplies a series combination of finite resistance, $\text{R}$, and a very large inductance, $\text{L}$. The two most dominant frequency components in the source current are: $50\:Hz,\:0\:Hz$ $50\:Hz,\:100\:Hz$ $50\:Hz,\:150\:Hz$ $150\:Hz,\:250\:Hz$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
12
GATE2020EE12
Thyristor $T_{1}$ is triggered at an angle $\alpha$ (in degree), and $T_{2}$ at angle $180^{\circ}+\alpha$, in each cycle of the sinusoidal input voltage. Assume both thyristors to be ideal. To control the load power over the range $0$ to $\text{2 k W}$, the minimum range of ... $0^{\circ}\:to\:120^{\circ}$ $60^{\circ}\:to\:120^{\circ}$ $60^{\circ}\:to\:180^{\circ}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
13
GATE2020EE13
Which of the options is an equivalent representation of the signal flow graph shown here?
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
14
GATE2020EE14
A commonsource amplifier with a drain resistance, $R_{D}=4.7\:k\Omega$, is powered using a $10\:V$ power supply. Assuming that the transconductance, $_{m}$, is $520\:\mu A/V$, the voltage gain of the amplifier is closest to: $2.44$ $1.22$ $1.22$ $2.44$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
15
GATE2020EE15
A sequence detector is designed to detect precisely 3 digital inputs, with overlapping sequences detectable. For the sequence $\text{(1,0,1)}$ and input data $\text{(1,1,0,1,0,0,1,1,0,1,0,1,1,0)}$, what is the output of this detector? $1,1,0,0,0,0,1,1,0,1,0,0$ $0,1,0,0,0,0,0,1,0,1,0,0$ $0,1,0,0,0,0,0,1,0,1,1,0$ $0,1,0,0,0,0,0,0,1,0,0,0$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
16
GATE2020EE16
Consider the initial value problem below. The value of y at $x=\ln{2}$, (rounded off to $3$ decimal places) is_____________________. $\frac{\mathrm{d} y}{\mathrm{d} x}=2xy,\:\:y\left ( 0 \right )=1$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
17
GATE2020EE17
A threephase, $\text{50 Hz}$, $4$pole induction motor runs at noload with a slip of $1$ %. With full load, the slip increases to $5$ %. The % speed regulation of the motor (rounded off to $2$ decimal places) is _____________________.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
18
GATE2020EE18
Currents through ammeters $\text{A2}$ and $\text{A3}$ in the figure are $1\angle 10^{\circ}\:and\:1\angle 70^{\circ}$, respectively. The reading of the ammeter $\text{A1}$ (rounded off to $3$ decimal places) is_______$\text{A}$.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
19
GATE2020EE19
The Thevenin equivalent voltage, $V_{TH}$, in $\text{V}$ (rounded off to $2$ decimal places) of the network shown below, is _______
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
20
GATE2020EE20
A double pulse measurement for an inductively loaded circuit controlled by the $\text{IGBT}$ switch is carried out to evaluate the reverse recovery characteristics of the diode, $\text{D}$, represented approximately as a piecewise linear plot of current vs time at diode turn ... entering $1, 2, 3, or\:4$) at which the $\text{IGBT}$ experiences the highest current stress is _________.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
21
GATE2020EE21
A singlephase, $\text{4 kVA}$, $\text{200 V/100 V}$, $\text{50 Hz}$ transformer with laminated $\text{CRGO}$ steel core has rated noload loss of $\text{450 W}$. When the highvoltage winding is excited with $\text{160 V}$, $\text{40 Hz}$ ... $\text{25 Hz}$ sinusoidal ac source, the noload losses will be _____________________$\text{W}$ (rounded off to $2$ decimal places).
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
22
GATE2020EE22
A singlephase inverter is fed from a $\text{100 V}$ dc source and is controlled using a quasisquare wave modulation scheme to produce an output waveform, $\nu\left ( t \right )$, as shown. The angle $\sigma$ is adjusted to entirely ... $2$ decimal places).
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
23
GATE2020EE23
A single $\text{50 Hz}$ synchronous generator on droop control was delivering $\text{100 MW}$ power to a system. Due to increase in load, generator power had to be increased by $\text{10 MW}$ ... $\text{MW}$ supplied by the generator is _________________ (rounded off to $2$ decimal places).
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
24
GATE2020EE24
Consider a negative unity feedback system with forward path transfer function $G\left ( s \right )=\frac{K}{\left ( s+a \right )\left ( sb \right )\left ( s+c \right )}$, where $\text{K, a, b, c}$ are positive real numbers. For a Nyquist path enclosing the ... $\frac{G\left ( s \right )}{1+G\left ( s \right )}$ lying in the open right half of the $\text{s}$plane is__________.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
25
GATE2020EE25
The crosssection of a metaloxidesemiconductor structure is shown schematically. Starting from an uncharged condition, a bias of $\text{+3 V}$ is applied to the gate contact with respect to the body contact. The charge inside the silicon dioxide layer is ... of bias, expressed as a multiple of $\text{Q}$ (absolute value in Coulombs, rounded off to the nearest integer) is___________
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
26
GATE2020EE26
For real numbers, $\text{x}$ and $\text{y}$, with $y=3x^{2}+3x+1$, the maximum and minimum value of $\text{y}$ for $\text{x}$ $\epsilon\left [ 2,0 \right ]$ are respectively, ______. $\text{7 and 1/4}$. $\text{7 and 1}$. $\text{2 and 1/2}$. $\text{1 and 1/4}$.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
27
GATE2020EE27
The vector function expressed by $F=a_{x}\left ( 5yk_{1} z\right )+a_{y}\left ( 3z+k_{2}x \right )+a_{z}\left ( k_{3} y4x\right )$ represents a conservative field, where $a_{x}, a_{y},a_{z}$ are unit vectors along $\text{x, y and z}$ ... $k_{1}=3, k_{2}=8,k_{3}=5$ $k_{1}=4, k_{2}=5,k_{3}=3$ $k_{1}=0, k_{2}=0,k_{3}=0$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
28
GATE2020EE28
A $\text{250 V}$ dc shunt motor has an armature resistance of $0.2\:\Omega$ and a field resistance of $100\:\Omega$. When the motor is operated on noload at rated voltage, it draws an armature current of $\text{5 A}$ and runs at $\text{1200 rpm}$ ... operating conditions. The speed of the motor, in $\text{rpm}$ under this loaded condition, is closest to: $1200$ $1000$ $1220$ $900$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
29
GATE2020EE29
Two buses, $\text{i and j}$, are connected with a transmission line admittance $\text{y}$ ...
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
30
GATE2020EE30
Consider the diode circuit shown below. The diode, D, obeys the currentvoltage characteristic $I_{D}=I_{S}\left ( exp\left ( \frac{V_{D}}{nV_{T}} \right )1 \right )$, where $n> 1, V_{T}> 0, V_{D}$ is the voltage across the diode and $I_{D}$ is the current through it. ... $\text{Large}$ $R_{1}$ and $\text{small}$ $R_{2}$. $\text{Small}$ $R_{1}$ and $\text{large}$ $R_{2}$.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
31
GATE2020EE31
A nonideal diode is biased with a voltage of $\text{0.03 V}$, and a diode current of $I_{1}$ is measured. The thermal voltage is $\text{26 mV}$ and the ideality factor for the diode is $15/13$. The voltage, in $\text{V}$, at which the measured current increases to $1.5I_{1}$ is closest to: $0.02$ $0.09$ $1.50$ $4.50$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
32
GATE2020EE32
A benchtop dc power supply acts as an ideal $\text{4 A}$ current source as long as its terminal voltage is below $\text{10 V}$. Beyond this point, it begins to behave as an ideal $\text{10 V}$ voltage source for all load currents going down to $\text{0 A}$. When connected to an ideal rheostat, ... $\text{2.5 $\Omega$, 4 A, 10 V}$ $\text{2.5 $\Omega$, 4 A , 5 V}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
33
GATE2020EE33
The static electric field inside a dielectric medium with relative permittivity, $\varepsilon _{r}=2.25$, expressed in cylindrical coordinate system is given by the following expression $E=a_{r}2r+a_{\varphi }\left ( \frac{3}{r} \right )+a_{z}6$ ... $3\varepsilon _{0}$ $4\varepsilon _{0}$ $5\varepsilon _{0}$ $9\varepsilon _{0}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
34
GATE2020EE34
Consider a permanent magnet dc $\text{(PMDC)}$ motor which is initially at rest. At $\text{t=0}$, a dc voltage of $\text{5 V}$ is applied to the motor. Its speed monotonically increase from $\text{0 rad/s}$ to $\text{6.32 rad/s}$ in $\text{0.5 s}$ ... is $\large\frac{10}{0.5s+1}$ $\large\frac{2}{0.5s+1}$ $\large\frac{2}{s+0.5}$ $\large\frac{10}{s+0.5}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
35
GATE2020EE35
Which of the following options is correct for the system shown below? $\text{$4^{th}$ order and stable}$ $\text{$3^{rd}$ order and stable}$ $\text{$4^{th}$ order and unstable}$ $\text{$3^{rd}$ order and unstable}$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
36
GATE2020EE36
Consider a negative unity feedback system with the forward path transfer function $\large\frac{s^{2}+s+1}{s^{3}+2s^{2}+2s+K},$ where $\text{K}$ is a positive real number. The value of $\text{K}$ for which the system will have some of its poles on the imaginary axis is ____________. $9$ $8$ $7$ $6$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
37
GATE2020EE37
Suppose for input $x(t)$ a linear timeinvariant system with impulse response $h(t)$ produces output $y(t)$,so that $x\left ( t \right )*h\left ( t \right )=y\left ( t \right )$ ... $t\:\in \left ( \infty, \infty \right ),z\left ( t \right )\geq y\left ( t \right )$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
38
GATE2020EE38
The causal realization of a system transfer function $\text{H(s)}$ having poles at $(2,1), (2,1)$ and zeroes at $(2,1), (2,1)$ will be stable, real, allpass unstable, complex, allpass unstable, real, highpass stable, complex, lowpass
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
39
GATE2020EE39
Which of the following options is true for a linear timeinvariant discrete time system that obeys the difference equation: $y\left [ n \right ]ay\left [ n1 \right ]=b_{0}x\left [ n \right ]b_{1}x\left [ n1 \right ]$ $y[n]$ ... $y\left [ n \right];n > 0$ is solely determined by the function $x[n]$.
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
0
votes
0
answers
40
GATE2020EE40
Let $a_{r},\:a_{\phi }\:and\:a_{z}$ be unit vectors along $r,\:\phi\:and\:z$ directions, respectively in the cylindrical coordinate system. For the electric flux density given by $D=\left ( a_{r}15+a_{\phi } 2r  a_{z} 3rz \right )\:Coulomb/m^{2}$, the total electric ... $\text{z}$axis with its base at the origin is: $54\:\pi$ $90\:\pi$ $108\:\pi$ $180\:\pi$
asked
Feb 28
in
new
by
jothee
(
1.4k
points)
gate2020ee
To see more, click for the
full list of questions
or
popular tags
.
Welcome to GATE Overflow, Electrical, where you can ask questions and receive answers from other members of the community.
Follow @csegate
Gatecse
913
questions
50
answers
12
comments
27,692
users