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1
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 _________.
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2
GATE2020EE53
The temperature of the coolant oil bath for a transformer is monitored using the circuit shown. It contains a thermistor with a temperaturedependent 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 ____________.
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3
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___________
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4
GATE2020EEGA1
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
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Numerical Ability
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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 $\text{x, y and z}$ ... $k_{1}=3, k_{2}=8,k_{3}=5$ $k_{1}=4, k_{2}=5,k_{3}=3$ $k_{1}=0, k_{2}=0,k_{3}=0$
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Feb 28
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6
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: $1.00$ $3.61$ $5.00$ $6.25$
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7
GATE2020EEGA10
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 _______. $32.7$ $33.7$ $34.1$ $35.1$
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Feb 28
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Numerical Ability
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1.4k
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8
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.
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9
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 $n \geq 0.$ ... $\left  z \right > 2$ $\left  z \right < \frac{1}{2}$ $\left  z \right > \frac{1}{2}$
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10
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 _____________________.
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11
GATE2020EEGA2
People were prohibited_____their vehicles near the entrance of the main administrative building. to park from parking parking to have parked
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Feb 28
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Numerical Ability
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1.4k
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12
GATE2020EE19
The Thevenin equivalent voltage, $V_{TH}$, in $\text{V}$ (rounded off to $2$ decimal places) of the network shown below, is _______
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13
GATE2020EE29
Two buses, $\text{i and j}$, are connected with a transmission line admittance $\text{y}$ ...
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14
GATE2020EEGA4
Stock markets _______ at the news of the coup. poised plunged plugged probed
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Feb 28
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Numerical Ability
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15
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.
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16
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 ... $0^{\circ}\:to\:120^{\circ}$ $60^{\circ}\:to\:120^{\circ}$ $60^{\circ}\:to\:180^{\circ}$
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Feb 28
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17
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).
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Feb 28
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18
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__________.
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19
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 $\text{large}$ $R_{2}$.
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20
GATE2020EEGA6
Nonperforming Assets $\text{(NPAs)}$ of a bank in India is defined as an asset, which remains unpaid by a borrower for a certain period of time in terms of interest, principal, or both.Reserve Bank of India $\text{(RBI)}$ ... paragraph, the holding period of loans in $\text{2004}$ after the third revision was ______ days. $45$ $90$ $135$ $180$
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Feb 28
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Numerical Ability
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21
GATE2020EEGA7
Select the next element of the series: $\text{Z, WV , RQP,}$ _____ $\text{LKJI}$ $\text{JIHG}$ $\text{KJIH}$ $\text{NMLK}$
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Feb 28
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Numerical Ability
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22
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 $\text{t}$. ... $y_{A}\neq kx_{A} ;\:y_{R}= kx_{R}$ $y_{A}\neq kx_{A} ;\:y_{R}\neq kx_{R}$
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23
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 $E_{A}$ ... $\text{P is false and Q is false}$. $\text{P is true and Q is true}$.
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Feb 28
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24
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
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25
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 $+2j,2j$ $+2,2$ $+4,4$ $+4j,4j$
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26
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: $50\:Hz,\:0\:Hz$ $50\:Hz,\:100\:Hz$ $50\:Hz,\:150\:Hz$ $150\:Hz,\:250\:Hz$
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27
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? $1,1,0,0,0,0,1,1,0,1,0,0$ $0,1,0,0,0,0,0,1,0,1,0,0$ $0,1,0,0,0,0,0,1,0,1,1,0$ $0,1,0,0,0,0,0,0,1,0,0,0$
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28
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_______$\text{A}$.
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29
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).
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30
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, ______. $\text{7 and 1/4}$. $\text{7 and 1}$. $\text{2 and 1/2}$. $\text{1 and 1/4}$.
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31
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: $1200$ $1000$ $1220$ $900$
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32
GATE2020EEGA3
Select the word that fits the analogy: Do : Undo :: Trust : ______ Entrust Intrust Distrust Untrust
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Feb 28
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Numerical Ability
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33
GATE2020EEGA5
If $\text{P, Q, R, S}$ are four individuals, how many teams of size exceeding one can be formed, with $\text{Q}$ as a member? $5$ $6$ $7$ $8$
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Feb 28
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Numerical Ability
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34
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? $\frac{1}{\pi }\int_{0}^{\pi }\sin m\theta \:\sin n\theta d\theta =0$ ... $\lim_{\alpha \rightarrow \infty }\frac{1}{2\alpha }\int_{\alpha }^{\alpha }\sin p\theta \:\sin q\theta d\theta =0$
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35
GATE2020EE5
The value of the following complex integral, with $\text{C}$ representing the unit circle centered at origin in the counterclockwise sense, is: $\int _{C}\frac{z^{2}+1}{z^{2}2z}\:dz$ $8\pi i$ $8\pi i$ $\pi i$ $\pi i$
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36
GATE2020EE13
Which of the options is an equivalent representation of the signal flow graph shown here?
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37
GATE2020EE16
Consider the initial value problem below. The value of y at $x=\ln{2}$, (rounded off to $3$ decimal places) is_____________________. $\frac{\mathrm{d} y}{\mathrm{d} x}=2xy,\:\:y\left ( 0 \right )=1$
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38
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).
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39
GATE2020EEGA8
In fourdigit integer numbers from $1001$ to $9999$, the digit group $\text{“37”}$ (in the same sequence) appears ________ times. $270$ $279$ $280$ $299$
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Feb 28
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Numerical Ability
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40
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: $2.44$ $1.22$ $1.22$ $2.44$
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