Hot questions - GO Electrical

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1

GATE2020-EE-20
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)

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2

GATE2020-EE-53
The temperature of the coolant oil bath for a transformer is monitored using the circuit shown. It contains a thermistor with a temperature-dependent resistance, $R_{thermistor}=2\left ( 1+\alpha\:T \right )k\Omega$, where $\text{T}$ is the temperature in $^{\circ}C$. ... error in the output signal (in $\text{V}$ , rounded off to $2$ decimal places) at $150^{\circ}C$ is ____________.

asked Feb 28 in new by jothee (1.4k points)

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3

GATE2020-EE-25
The cross-section of a metal-oxide-semiconductor 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)

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4

GATE2020-EE-GA-1
This book, including all its chapters,_______interesting. The students as well as the instructor_______in agreement about it. is, was are, are is, are were, was

asked Feb 28 in Numerical Ability by jothee (1.4k points)

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5

GATE2020-EE-8
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 phase-to- 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)

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6

GATE2020-EE-27
The vector function expressed by $F=a_{x}\left ( 5y-k_{1} z\right )+a_{y}\left ( 3z+k_{2}x \right )+a_{z}\left ( k_{3} y-4x\right )$ 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)

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7

GATE2020-EE-1
$ax^{3}+bx^{2}+cx+d$ 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)

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8

GATE2020-EE-4
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)

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9

GATE2020-EE-GA-10
The revenue and expenditure of four different companies $\text{P, Q, R and S}$ in $2015$ are shown in the figure. If the revenue of company $\text{Q}$ in $2015$ was $20$% more than that in $2014$, and company $\text{Q}$ had earned a profit of $10$% on expenditure in $2014$, then its expenditure (in million rupees) in $2014$ was _______. $32.7$ $33.7$ $34.1$ $35.1$

asked Feb 28 in Numerical Ability by jothee (1.4k points)

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10

GATE2020-EE-GA-2
People were prohibited_____their vehicles near the entrance of the main administrative building. to park from parking parking to have parked

asked Feb 28 in Numerical Ability by jothee (1.4k points)

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11

GATE2020-EE-GA-4
Stock markets _______ at the news of the coup. poised plunged plugged probed

asked Feb 28 in Numerical Ability by jothee (1.4k points)

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12

GATE2020-EE-12
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)

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13

GATE2020-EE-29
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)

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14

GATE2020-EE-30
Consider the diode circuit shown below. The diode, D, obeys the current-voltage 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)

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15

GATE2020-EE-GA-7
Select the next element of the series: $\text{Z, WV , RQP,}$ _____ $\text{LKJI}$ $\text{JIHG}$ $\text{KJIH}$ $\text{NMLK}$

asked Feb 28 in Numerical Ability by jothee (1.4k points)

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16

GATE2020-EE-3
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 non-zero 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)

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17

GATE2020-EE-6
$x_{R}$ and $x_{A}$ are, respectively, the rms and average values of $x\left ( t \right )=x\left ( t-T \right ),$ 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)

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18

GATE2020-EE-7
A three-phase 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)

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19

GATE2020-EE-9
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)

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20

GATE2020-EE-10
Consider a linear time-invariant 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)