Most viewed questions - GO Electrical

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1

GATE2013-58
Complete the sentence: Dare _______________ mistakes. commit to commit committed committing

asked Feb 12, 2017 in Verbal Ability by piyag476 (1.5k points)

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2

GATE2015-1-50
A $200/400$ V, $50$ Hz, two-winding transformer is rated at $20$ kVA. Its windings are connected as an auto-transformer of rating $200/600$ V. A resistive load of $12 \Omega$ is connected to the high voltage ($600$ V) side of the auto-transformer. The value of equivalent load resistance (in Ohm) as seen from low voltage side is _________.

asked Feb 12, 2017 in new by makhdoom ghaya (9.2k points)

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3

GATE2018-4
Four power semiconductor devices are shown in the figure along with their relevant terminals. The device(s) that can carry dc current continuously in the direction shown when gated appropriately is (are) Triac only Triac and MOSFET Triac and GTO Thyristor and Triac

asked Feb 19, 2018 in new by Arjun (5.4k points)

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GATE2018-14
In the logic circuit shown in the figure, $Y$ is given by $Y=ABCD$ $Y=(A+B)(C+D)$ $Y=A+B+C+D$ $Y=AB+CD$

asked Feb 19, 2018 in new by Arjun (5.4k points)

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5

GATE2017-2-49
For the synchronous sequential circuit shown below, the output $Z$ is zero for the initial conditions $Q_{A}, Q_{B}, Q_{C}= Q'_{A}, Q'_{B}, Q'_{C}=100$ The minimum number of clock cycles after which the output $Z$ would again become zero is _________.

asked Feb 27, 2017 in new by Arjun (5.4k points)

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6

GATE2018-51
A $3$-phase $900$ kVA, $3 \: kV/ \sqrt{3} kV$ ( $\Delta/$), $50$ Hz transformer has primary (high voltage side) resistance per phase of $0.3 \: \Omega$ and secondary (low voltage side) resistance per phase of $0.02 \: \Omega$. Iron loss of the transformer is $10 \: kW$. The full load $\%$ efficiency of the transformer operated at unity power factor is _______ (up to $2$ decimal places)

asked Feb 19, 2018 in new by Arjun (5.4k points)

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7

GATE2017-2-1
An urn contains $5$ red balls and $5$ black balls. In the first draw, one ball is picked at random and discarded without noticing its colour. The probability to get a Red ball in the second draw is $\frac{1}{2} \\$ $\frac{4}{9} \\$ $\frac{5}{9} \\$ $\frac{6}{9} $

asked Feb 27, 2017 in new by Arjun (5.4k points)

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8

GATE2019 EE: GA-1
I am not sure if the bus that has been booked will be able to ______ all the students. sit deteriorate fill accommodate

asked Feb 12 in Verbal Ability by Arjun (5.4k points)

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9

GATE2019 EE: 39
If $\textbf{A}= 2x \textbf{i} + 3y \textbf{j} +4z \textbf{k}$ and $u=x^2+y^2+z^2$, then $\text{div} \big(u \textbf{A} \big)$ at $(1,1,1)$ is _______

asked Feb 12 in new by Arjun (5.4k points)

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10

GATE2014-2-52
In an $8085$ microprocessor, the following program is executed Address location – Instruction 2000H XRA A 2001H MVI B,04H 2003H MVI A, 03H 2005H RAR 2006H DCR B 2007H JNZ 2005 200AH HLT At the end of program, register A contains $60H$ $30H$ $06H$ $03H$

asked Feb 12, 2017 in Electrical and Electronic Measurements by makhdoom ghaya (9.2k points)

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11

GATE2015-1-36
A parallel plate capacitor is partially filled with glass of dielectric constant $4.0$ as shown below. The dielectric strengths of air and glass are $30$ kV/cm and $300$ kV/cm, respectively. The maximum voltage (in kilovolts), which can be applied across the capacitor without any breakdown, is ______.

asked Feb 12, 2017 in Electromagnetic Fields by makhdoom ghaya (9.2k points)

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12

GATE2014-1-23
The magnitude of the mid-band voltage gain of the circuit shown in figure is $($assuming $h_{fe}$ of the transistor to be $100)$ $1$ $10$ $20$ $100$

asked Feb 12, 2017 in Electrical and Electronic Measurements by makhdoom ghaya (9.2k points)

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13

GATE2014-1-46
A system matrix is given as follows. $A=\begin{bmatrix} 0 & 1 & -1\\ -6 & -11 &6 \\ -6& -11& 5 \end{bmatrix}$ The absolute value of the ratio of the maximum eigenvalue to the minimum eigenvalue is _______

asked Feb 12, 2017 in Linear Algebra by makhdoom ghaya (9.2k points)

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14

GATE2014-1-18
The root locus of a unity feedback system is shown in the figure The closed loop transfer function of the system is $\frac{C(s)}{R(s)}=\frac{K}{(s+1)(s+2)}$ $\frac{C(s)}{R(s)}=\frac{-K}{(s+1)(s+2)+K}$ $\frac{C(s)}{R(s)}=\frac{K}{(s+1)(s+2)-K}$ $\frac{C(s)}{R(s)}=\frac{K}{(s+1)(s+2)+K}$

asked Feb 12, 2017 in Control Systems by makhdoom ghaya (9.2k points)

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15

GATE2017-1-4
A solid iron cylinder is placed in a region containing a uniform magnetic field such that the cylinder axis is parallel to the magnetic field direction. The magnetic field lines inside the cylinder will Bend closer to the cylinder axis Bend farther away from the axis Remain uniform as before Cease to exist inside the cylinder

asked Feb 27, 2017 in new by Arjun (5.4k points)

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16

GATE2017-2-24
The nominal- $\pi$ circuit of a transmission line is shown in the figure. Impedance $Z=100 \angle 80^{\circ} \Omega$ and reactance $X=3300 \Omega$. The magnitude of the characteristic impedance of the transmission line, in $\Omega$, is __________. (Give the answer up to one decimal place.)

asked Feb 27, 2017 in new by Arjun (5.4k points)

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17

GATE2019 EE: GA-2
The passengers were angry ______ the airline staff about the delay. on about with towards

asked Feb 12 in Verbal Ability by Arjun (5.4k points)

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18

GATE2018-52
A $200$ V DC series motor, when operating from rated voltage while driving a certain load, draws $10$ A current and runs at $1000$ r.p.m. The total series resistance is $1 \: \Omega$. The magnetic circuit is assumed to be linear. At the same supply voltage, the load torque is increased by $44 \%$. The speed of the motor in r.p.m (rounded to the nearest integer) is _____________

asked Feb 19, 2018 in new by Arjun (5.4k points)

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19

GATE2014-3-51
A $3$-$bit$ gray counter is used to control the output of the multiplexer as shown in the figure. The initial state of the counter is $0002$. The output is pulled $high$. The output of the circuit follows the sequence $I_0$, $1$, $1$, $I_1$, $I_3$, $1$, $1$, $I_2$ $I_0$, $1$, $I_1$ ... , $I_0$, $1$, $I_1$, $I_2$, $1$, $I_3$,$1$ $I_0$, $I_1$, $I_2$, $I_3$, $I_0$, $I_1$, $I_2$, $I_3$

asked Feb 12, 2017 in Analog and Digital Electronics by makhdoom ghaya (9.2k points)

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20

GATE2018-18
Let $f$ be a real-valued function of a real variable defined as $f(x)=x – [x]$, where $[x]$ denotes the largest integer less than or equal to $x$. The value of $\int_{0.25}^{1.25} f(x) dx$ is _______ (up to $2$ decimal places).

asked Feb 19, 2018 in new by Arjun (5.4k points)

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21

GATE2015-1-41
Consider the economic dispatch problem for a power plant having two generating units. The fuel costs in Rs/MWh along with the generation limits for the two units are given below: $C_{1}(P_{1})=0.01P^{2}_{1}+30P_{1}+10 ; 100MW \leq P_{1}\leq 150MW$ ... $200$ MW is _______.

asked Feb 12, 2017 in Power Systems by makhdoom ghaya (9.2k points)

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22

GATE2012-63
Raju has $14$ currency notes in his pocket consisting of only Rs. $20$ notes and Rs. $10$ notes. The total money value of the notes is Rs. $230$. The number of Rs. $10$ notes that Raju has is $5$ $6$ $9$ $10$

asked Mar 24, 2018 in Numerical Ability by Andrijana3306 (1.4k points)

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23

GATE2018-50
The figure shows two buck converters connected in parallel. The common input dc voltage for the converters has a value of $100 \: V$. The converters have inductors of identical value. The load resistance is $1 \: \Omega$. The capacitor voltage has negligible ripple. Both ... average value of $i_{s1}$, the current of switch $S1$ (in Ampere), is ____________ (up to $2$ decimal places).

asked Feb 19, 2018 in new by Arjun (5.4k points)

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24

GATE2014-3-8
The driving point impedance $Z(s)$ for the circuit shown below is $\frac{s^4+3s^2+1}{s^3+2s} \\ $ $\frac{s^4+2s^2+1}{s^2+2} \\ $ $\frac{s^2+1}{s^4+s^2+1} \\$ $\frac{s^3+1}{s^4+s^2+1}$

asked Feb 12, 2017 in Electrical Circuits by makhdoom ghaya (9.2k points)

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25

GATE2014-3-4
Lifetime of an electric bulb is a random variable with density $f(x)=kx^2$ , where $x$ is measured in years. If the minimum and maximum lifetimes of bulb are $1$ and $2$ years respectively, then the value of k is ________.

asked Feb 12, 2017 in Probability & Statistics by makhdoom ghaya (9.2k points)

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26

GATE2015-1-26
The maximum value of "a" such that the matrix $\begin{pmatrix} -3&0&-2 \\ 1&-1&0 \\ 0&a&-2 \end{pmatrix}$ has three linearly independent real eigenvectors is $\frac{2}{3\sqrt{3}}$ $\frac{1}{3\sqrt{3}}$ $\frac{1+2\sqrt{3}}{3\sqrt{3}}$ $\frac{1+\sqrt{3}}{3\sqrt{3}}$

asked Feb 12, 2017 in Linear Algebra by makhdoom ghaya (9.2k points)

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27

GATE2019 EE: GA-8
An award-winning study by a group of researchers suggests that men are as prone to buying on impulse as women but women feel more guilty about shopping. which one of the following statements can be inferred from the given text? Some men and women indulge ... indulge in buying on impulse Few men and women indulge in buying on impulse Many men and women indulge in buying on impulse

asked Feb 12 in Verbal Ability by Arjun (5.4k points)

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28

GATE2014-3-GA-6
A dance programme is scheduled for $10.00$ $a.m$. Some students are participating in the programme and they need to come an hour earlier than the start of the event. These students should be accompanied by a parent. Other students and parents should come in time for the programme ... $9.00$ $a.m$. All others should come at $10.00$ $a.m$.

asked Feb 12, 2017 in Numerical Ability by makhdoom ghaya (9.2k points)

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29

GATE2016-2-39
The open loop transfer function of a unity feedback control system is given by $G(s)=\frac{k(s+1)}{s(1+Ts)(1+2S)'}, K > 0, T > 0.$ The closed loop system will be stable if $0 < T < \frac{4(K+1)}{K-1}$ $0 < K < \frac{4(T+2)}{T-2}$ $0 < K < \frac{T+2}{T-2}$ $0 < T < \frac{8(k+1)}{K-1}$

asked Jan 30, 2017 in Control Systems by makhdoom ghaya (9.2k points)

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30

GATE2019 EE: 20
A co-axial Cylindrical capacitor is shown in the Figure(i) has dielectric with relative permittivity $\varepsilon_{r1} = 2$. When one – fourth portion of the dielectric is replaced with another dielectric of relative permittivity $\varepsilon_{r2}$, as shown in the Figure(ii), the capacitance is doubled. The value of $\varepsilon_{r2}$ is _________.

asked Feb 12 in new by Arjun (5.4k points)

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31

GATE2015-2-6
A $3$-phase balanced load which has a power factor of $0.707$ is connected to a balanced supply. The power consumed by the load is $5$ kW. The power is measured by the two-wattmeter method. The readings of the two wattmeters are $3.94$ kW and $1.06$ kW $2.50$ kW and $2.50$ kW $5.00$ kW and $0.00$ kW $2.96$ kW and $2.04$ kW

asked Feb 12, 2017 in Power Systems by makhdoom ghaya (9.2k points)

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32

GATE2019 EE: GA-10
Consider five people- Mita, Ganga, Rekha, Lakshmi, and Sana. Ganga is taller than both Rekha and Lakshmi. Lakshmi is taller than Sana. Mita is taller than Ganga. Which of the following conclusions are true? Lakshmi is taller than Rekha Rekha is shorter than Mita Rekha is taller than Sana Sana is shorter than Ganga $1$ and $3$ $3$ only $2$ and $4$ $1$ only

asked Feb 12 in Verbal Ability by Arjun (5.4k points)

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33

GATE2018-54
The equivalent circuit of a single phase induction motor is shown in the figure, where the parameters are $R_1 =R_2=X_{l1}=X_{l2} = 12 \Omega$, $X_M=240 \: \Omega$ and $S$ is the slip. At no-load, the motor speed can be approximated to the synchronous speed. The no-load lagging power factor of the motor is __________ (up to $3$ decimal places).

asked Feb 19, 2018 in new by Arjun (5.4k points)

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34

GATE2014-3-16
A $183$-bus power system has $150$ $PQ$ buses and $32$ $PV$ buses. In the general case, to obtain the load flow solution using Newton-Raphson method in polar coordinates, the minimum number of simultaneous equations to be solved is ___________.

asked Feb 12, 2017 in Power Systems by makhdoom ghaya (9.2k points)

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35

GATE2018-41
In the circuit shown in the figure, the bipolar junction transistor (BJT) has a current gain $\beta = 100$. The base-emitter voltage drop is a constant, $V_{BE}=0.7 \: V$. The value of the Thevenin equivalent resistance $R_{Th}$ (in $\Omega$) as shown in the figure is _________ (up to $2$ decimal places)

asked Feb 19, 2018 in new by Arjun (5.4k points)

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36

GATE2017-1-GA-10
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)

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37

GATE2014-1-20
In an oscilloscope screen, linear sweep is applied at the vertical axis horizontal axis origin both horizontal and vertical axis

asked Feb 12, 2017 in Electrical Circuits by makhdoom ghaya (9.2k points)

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38

GATE2019 EE: GA-3
The missing number in the given sequence $343,1331,$_____$,4913$ is $3375$ $2744$ $2197$ $4096$

asked Feb 12 in Numerical Ability by Arjun (5.4k points)

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39

GATE2017-2-GA-9
The number of roots of $e^{x}+0.5x^{2}-2=0$ in the range $[-5, 5]$ is $0$ $1$ $2$ $3$

asked Feb 27, 2017 in Numerical Ability by Arjun (5.4k points)

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40

GATE2017-1-51
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 $p_{k}=\frac{1}{\sqrt{2}} \text{exp}(j\frac{(2k-1)\pi}{4})$ ... 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)