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
Recent questions without an upvoted answer
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
GATE2017212
In the circuit shown, the diodes are ideal, the inductance is small, and $I_{0} \neq 0$. Which one of the following statements is true? $D_{1}$ conducts for greater than $180^{\circ}$ and $D_{2}$ conducts for greater than $180^{\circ}$. $D_{2}$ conducts for more than ... $180^{\circ}$. $D_{1}$ conducts for more than $180^{\circ}$ and $D_{2}$ conducts for $180^{\circ}$.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
2
GATE2017213
A threephase voltage source inverter with ideal devices operating in $180^{\circ}$ conduction mode is feeding a balanced starconnected resistive load. The $DC$ voltage input is $V_{dc}$. The peak of the fundamental component of the phase voltage is $\frac{V_{dc}}{\pi} \\$ $\frac{2V_{dc}}{\pi} \\$ $\frac{3V_{dc}}{\pi} \\$ $\frac{4V_{dc}}{\pi} $
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
3
GATE2017214
A $3$phase, $4$pole, $400$V, $50$Hz squirrelcage induction motor is operating at a slip of $0.02$. The speed of the rotor flux in mechanical rad/sec, sensed by a stationary observer, is closest to $1500$ $1470$ $157$ $154$
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
4
GATE2017215
The figure shows the perphase representation of a phaseshifting transformer connected between buses $1$ and $2$, where $\alpha$ is a complex number with nonzero real and imaginary parts. For the given circuit, $Y_{bus}$ and $Z_{bus}$ are bus admittance matrix and ... is unsymmetric. $Y_{bus}$ is unsymmetric and $Z_{bus}$ is symmetric. Both $Y_{bus}$ and $Z_{bus}$ are unsymmetric.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
5
GATE2017216
The figure below shows the circuit diagram of a controlled rectifier supplied from a $230$V, $50$Hz, $1$phase voltage source and a $10:1$ ideal transformer. Assume that all devices are ideal. The firing angles of the thyristors $T_{1}$ and $T_{2}$ are $90^{\circ}$ and $270^{\circ}$, respectively. The RMS value of the current through diode $D_{3}$ in amperes is _______.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
numericalanswers
0
votes
0
answers
6
GATE2017217
Assume that in traffic junction, the cycle of the traffic signal lights is $2$ minutes of green (Vehicle does not stop) and $3$ minutes of red (Vehicle stops). Consider that the arrival time of vehicles at the junction is uniformly distributed over $5$ minute cycle. The expected waiting time (in minutes) for the vehicle at the junction is ________.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
numericalanswers
0
votes
0
answers
7
GATE2017218
Consider a function $f(x, y, z)$ given by $f(x, y, z)=(x^{2}+y^{2}2z^{2})(y^{2}+z^{2})$ The partial derivative of this function with respect to $x$ at the point, $x=2, y=1$ and $z=3$ is _______.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
numericalanswers
0
votes
0
answers
8
GATE2017219
Let $x$ and $y$ be integers satisfying the following equations $2x^{2}+y^{2}=34$ $x+2y=11$ The value of $(x+y)$ is _______.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
numericalanswers
0
votes
0
answers
9
GATE2017220
Let $y^{2}2y+1=x$ and $\sqrt{x}+y=5$. The value of $x+\sqrt{y}$ equals _________. (Give the answer up to three decimal places).
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
numericalanswers
0
votes
0
answers
10
GATE201728
Two resistors with nominal resistance values $R_{1}$ and $R_{2}$ have additive uncertainties $\bigtriangleup R_{1}$ and $\bigtriangleup R_{2}$, respectively. When these resistances are connected in parallel, the standard deviation of the error in the equivalent resistance $R$ ...
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
11
GATE201729
A stationary closed Lissajous pattern on an oscilloscope has $3$ horizontal tangencies and $2$ vertical tangencies for a horizontal input with frequency $3$kHz. The frequency of the vertical input is $1.5$kHz $2$kHz $3$kHz $4.5$kHz
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
12
GATE2017210
For a $3$input logic circuit shown below, the output $Z$ can be expressed as $Q+\overline{R}$ $P\overline{Q}+R$ $\overline{Q}+R$ $P+\overline{Q}+R$
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
13
GATE201722
Consider a solid sphere of radius $5$ cm made of a perfect electric conductor. If one million electrons are added to this sphere, these electrons will be distributed Uniformly over the entire volume of the sphere. Uniformly over the outer surface of the sphere. Concentrated around the centre of the sphere. Along a straight line passing through the centre of the sphere.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
14
GATE201723
The figures show diagramatic representations of vector fields $\vec{X}, \vec{Y}, \text{and} \vec{Z}$ respectively. Which one of the following choices is true? $\bigtriangledown . \vec{X}=0,\bigtriangledown \times \vec{Y} \neq 0, \bigtriangledown \times \vec{Z}=0$ ... $\bigtriangledown . \vec{X}=0,\bigtriangledown \times \vec{Y} = 0, \bigtriangledown \times \vec{Z}=0$
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
15
GATE201724
The polezero plots of three discretetime systems $P, Q$ and $R$ on the $z$plane are shown below. Which one of the following is TRUE about the frequency selectivity of these systems? All three are highpass filters. All three are bandpass filters. All three are lowpass filters. $P$ is lowpass filter. $Q$ is a bandpass filter and $R$ is a highpass filter.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
16
GATE201725
If a synchronous motor is running at a leading power factor, its excitation induced voltage $(E_{f})$ is Equal to terminal voltage $V_{t}$ Higher than the terminal voltage $V_{t}$ Less than terminal voltage $V_{t}$ Dependent upon supply voltage $V_{t}$
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
17
GATE201726
When a unit ramp input is applied to the unity feedback system having closed loop transfer function $\frac{C(s)}{R(s)}=\frac{Ks+b}{s^{2}+as+b}, (a>0, b>0, K>0)$, the steady state error will be $0 \\ $ $\frac{a}{b} \\$ $\frac{a+K}{b} \\$ $\frac{aK}{b}$
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
18
GATE201727
The transfer function $C(s)$ of a compensator is given below. $C(s)=\frac{(1+\frac{s}{0.1})(1+\frac{s}{100})}{(1+s)(1+\frac{s}{10})}$ The frequency range in which the phase (lead) introduced by the compensator reaches the maximum is $0.1 < \omega < 1$ $1 < \omega < 10$ $10 < \omega < 100$ $ \omega > 100$
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee2
0
votes
0
answers
19
GATE2017154
The positive, negative, and zero sequence reactances of a wyeconnected synchronous generator are $0.2$pu, $0.2$pu, and $0.1$pu, respectively. The generator is an open circuit with a terminal voltage of $1$pu. The minimum value of the inductive ... ground fault occurs at the terminals is ___________ (assume fault impedance to be zero). (Give the answer up to one decimal place.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
20
GATE2017155
The figure shows the single line diagram of a power system with a double circuit transmission line. The expression for electrical power is $1.5 \sin \delta$, where $\delta$ is the rotor angle. The system is operating at the stable equilibrium point with mechanical power equal to ... $P_{\max}$, in pu is ______. (Give the answer up to three decimal places.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
21
GATE20171GA1
After Rajendra Chola returned from his voyage to Indonesia, he ________ to visit the temple in Thanjavur. Was wishing Is wishing Wished Had wished
asked
Feb 27, 2017
in
Verbal Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
22
GATE20171GA2
Research in the workplace reveals that people work for many reasons ________. Money beside Beside money Money besides Besides money
asked
Feb 27, 2017
in
Verbal Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
23
GATE20171GA3
Rahul, Murali, Srinivas and Arul are seated around a square table. Rahul is sitting to the left of Murali. Srinivas is sitting to the right of Arul. Which of the following pairs are seated opposite each other? Rahul and Murali Srinivas and Arul Srinivas and Murali Srinivas and Rahul
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
24
GATE20171GA4
Find the smallest number $y$ such that $y \times 162$ is a perfect cube. $24$ $27$ $32$ $36$
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
25
GATE20171GA5
The probability that a $k$digit number does NOT contain the digits $0, 5$ or $9$ is $0.3^{k}$ $0.6^{k}$ $0.7^{k}$ $0.9^{k}$
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
26
GATE20171GA6
"The hold of the nationalist imagination on our colonial past is such that anything inadequately or improperly nationalist is just not history." Which of the following statements best reflects the author's opinion? Nationalists are highly ... the filter of nationalism. Our colonial past never happened. Nationalism has to be both adequately and properly imagined.
asked
Feb 27, 2017
in
Verbal Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
27
GATE20171GA7
Six people are seated around a circular table. There are at least two men and two women. There are at least three righthanded persons. Every women has a lefthanded person to her immediate right. None of the women are righthanded. The number of women at the table is $2$ $3$ $4$ Cannot be determined.
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
28
GATE20171GA8
The expression $\frac{(x+y)xy}{2}$ is equal to The maximum of $x$ and $y$ The minimum of $x$ and $y$ $1$ None of the above.
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
29
GATE20171GA9
Arun, Gulab, Neel and Shweta must choose one shirt each from a pile of four shirts coloured Red, Pink, Blue and White respectively. Arun dislikes the colour red and Shweta dislikes the colour white. Gulab and Neel like all the colours. In how many different ways can they choose the shirts so that no one has a shirt with a colour he or she dislikes? $21$ $18$ $16$ $14$
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
30
GATE20171GA10
A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at $25$m intervals in this plot. If in a flood, the water level rises to $525$m, which of the villages $P, Q, R, S, T$ get submerged? $P, Q$ $P, Q, T$ $R, S, T$ $Q, R, S$
asked
Feb 27, 2017
in
Numerical Ability
by
Arjun
(
5.4k
points)
gate2017ee1
0
votes
0
answers
31
GATE2017142
Only one of the real roots of $f(x)=x^{6}x1$ lies in the interval $1 \leq x \leq 2$ and bisection method is used to find its value. For achieving an accuracy of $0.001$, the required minimum number of iterations is _________.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
32
GATE2017143
In the circuit shown below, the maximum power transferred to the resistor $R$ is ______ W.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
33
GATE2017144
The magnitude of magnetic flux density (B) in micro Teslas $(\mu T)$, at the centre of a loop of wire wound as a regular hexagon of side length $1 m$ carrying a current $(I=1 A)$, and placed in vacuum as shown in the figure is _________. (Give the answer up to two decimal places.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
34
GATE2017145
A $375$W, $230$V, $50$Hz, capacitor start singlephase induction motor has the following constants for the main and auxiliary windings (at starting): $Z_{m}=(12.50+j15.75) \Omega$ (main winding), $Z_{a}=(24.50+j12.75) \Omega$ (auxiliary ... the value of the capacitance (in $\mu F$) to be added in series with the auxiliary winding to obtain maximum torque at starting is ________.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
35
GATE2017146
Two parallel connected, threephase, $50$Hz, $11$kV, starconnected synchronous machines $A$ and $B$, are operating as synchronous condensers. They together supply $50$MVAR to a $11$kV grid. Current supplied by both the machines are equal. Synchronous reactances of ... of excitation current of machine $A$ to that of machine $B$ is _______. (Give the answer up to two decimal places.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
36
GATE2017147
A $220$V DC series motor runs drawing a current of $30$ A from the supply. Armature and field circuit resistances are $0.4\Omega$ and $0.1\Omega$, respectively. The load torque varies as the square of the speed. The flux in the motor may be taken as ... %, the resistance in ohms that should be added in series with the armature is ______. (Give the answer up to two decimal places.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
37
GATE2017148
A threephase, three winding $\Delta / \Delta / Y (1.1kV/6.6kV/400V)$ transformer is energized from $AC$ mains at the $1.1kV$ side. It supplies $900kVA$ load at $0.8$ power factor lag from the $6.6kV$ winding and $300kVA$ load at $0.6$ power factor ... . The $RMS$ line current in ampere drawn by the $1.1kV$ winding from the mains is ________. (Give the answer up to one decimal place.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
38
GATE2017149
A separately excited $DC$ generator supplies $150$A to a $145$V DC grid. The generator is running at $800$RPM. The armature resistance of the generator is $0.1\Omega$. If the speed of the generator is increased to $1000$ RPM, the current in amperes supplied by the generator to the $DC$ grid is ______. (Give the answer up to one decimal place.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
39
GATE2017150
For a system having transfer function $G(s)=\frac{s+1}{s+1}$, a unit step input is applied at time $t=0$. The value of the response of the system at $t=1.5 sec$ (rounded off to three decimal places) is ________.
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
0
votes
0
answers
40
GATE2017151
Consider a causal and stable $LTI$ system with rational transfer function $H(z)$, whose corresponding impulse response begins at $n=0$. Furthermore, $H(1)=\frac{5}{4}$. The poles of $H(z)$ are $p_{k}=\frac{1}{\sqrt{2}} \text{exp}(j\frac{(2k1)\pi}{4})$ ... all at $z=0$. Let $g[n]=j^{n}h[n]$. The value of $g[8]$ equals __________. (Give the answer up to three decimal places.)
asked
Feb 27, 2017
in
new
by
Arjun
(
5.4k
points)
gate2017ee1
numericalanswers
Page:
« prev
1
...
4
5
6
7
8
9
10
...
22
next »
Welcome to GATE Overflow, Electrical, where you can ask questions and receive answers from other members of the community.
All categories
Engineering Mathematics
Electrical Circuits
Electromagnetic Fields
Signals and Systems
Electrical Machines
Power Systems
Control Systems
Electrical and Electronic Measurements
Analog and Digital Electronics
Others
General Aptitude
Follow @csegate
Gatecse
847
questions
38
answers
10
comments
26,457
users